How Much Does It Cost to Coil Tap a Pickup?

bad ig coil will miss fire1. i need a ignition coil for my dirtbike?Any kawasaki shop should be able to order one in2. What happens when you have a bad ignition coil ??????a bad coil will do exactly what your car is doing,they will get hot then shut off, and not start back until it cools off,you could have probably saved a lot of money by asking someone before replacing all the parts you have on that one,it may have been the coil to start with on it,if a coil gets hot it will stop running,and then start back up when it cools down,you may as well get one for it,good luck with it3. 2005 chevy colorado spark plug or ignition coil problem not sure wich is it need help?Drive it to a chain like AutoZone or Pep Boys who will plug in their OBD II tester and give you the codes. Then research the codes. Check yourself for loose or cracked vacuum lines [black rubber] Check air idle sensor in the intake air box. Check for cracks in the air box or if it was assembled incorrectly. I can not explain it but when changing the air filter it is very easy for the lid and round filter not to line up. Look for the support in the air box that holds the round air filter in place. Ambient outside air gets in and the air idle sensor tries to compensate by sending a constantly changing signal to the computer which goes crazy trying to raise and lower the idle to compensate for the constantly changing air/fuel mix. You should not have fried plugs if you used the exact /correct AC replacement. If you used double irridium rombus plated plugs ditch them for the OE AC number plug. BTW it is a straight inline 4 cylinder, not a V4. Even the 3. 5 L 5 cyl is an inline engine. Lucky for you the 2. 8 liter is the better engine.4. Audi A4 2.8 Quatro - How can you check if ignition coil is bad...?Seems same VW and Audi still has a design defect if these coils are going bad in other year models and before 100,000 miles. Generally speaking for every car manufacturers, there is an individualist coil for apiece chamber mounted direct on top of the flash plug. This design completely eliminates the broad enmity flash block wires for even better reliability. Most of these systems are fashioned to last over 100,000 miles, which cuts down on fix costs. I have an '04 A4 Quattro 1.8L Turbo and one of my coils shorted out and my car sputtered and check engine light flashed just same everyone added is saying. This happened at 62,000. The labor was awninged low warranty to change every of them, but I had to clear for the parts which was around $36 apiece coil. Including the towing, it was a $357 total this after I had just had it in for 60k service last week. I think it is a good idea for car owners to chat and compare - so thanks to anyone who takes the time to do this. This might be the exclusive way we can keep the manufacturers in check.5. I checked my ignition coil but I don't know how to tell if it's actually good or bad?Its actually nice to see someone using a service manual out here.....and yes, if your coil is out of spec, you need to replace it6. How do i check a CDI box, Ignition coil, and Stator?You will need a manual to check this properly7. Bad Ignition Coil Symptoms And What Should You DoFewer things strike fear into a car owner then when their car seems to have trouble starting. It can be nerve wracking, waiting and hoping your engine turns over. And if it does start, you need to take a closer look at what is going on under the hood. If it does not start, then you really need to do some investigating. Sometimes cars have trouble starting because the battery is dying and sometimes it could be the ignition coil. How can you tell which it is and what can you do about it? How can you tell if it's the battery or ignition coil? If your car will not start at all, you need to find out why. If you have a voltmeter, you can start by checking the juice in your battery. If the battery has an acceptable reading, then you can cross that off the list. Or you can using best obd2 scanner to find the code, the bad ignition coil will bring back the P2300 code. But now it is time to consider you have a bad ignition coil. What is the ignition coil? An ignition coil is the part of the automobile's ignition system responsible for transforming the battery's low voltage in to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. This process starts the car. Although this can be a pretty basic symptom, a car that does not start often points to ignition trouble. It may be possible to get your vehicle to start by cranking the engine, but it will most likely be slow, especially if the ignition coil is struggling. When this happens, it is usually due to corrosion on the electrical circuit that is directly related to the ignition system. This blocks the right amount of electricity from flowing. Another sure sign of trouble is that your key will not turn in the ignition. Before you panic though, make sure that the ignition lock is not engaged. You can do this by simply turning the steering wheel back-and-forth. If after you do this the key will still not turn, it is possible that there may be excessive wear inside the ignition and that is what is preventing the key from properly aligning with the keyhole. If the key cannot be turned your car will not start. It is important to remember that stalling can be a sign of many different issues when it comes to cars. A key point to decide it is related to the ignition coil, however, is if it happens when you are driving your vehicle and not while sitting idle. 4. Dashboard lights flicker on and off Again, flickering dashboard lights can be a sign of several issues. An easy way to know if it is because of the ignition or not is to take note of when it happens. The way to tell if it is because of a bad ignition coil is if the lights flicker while you are driving the car. If you hop in your car and turn the key and nothing happens there's a chance that the ignition switch is to blame. It could be because the ignition switch is not able to create enough electricity to get power from the battery to the starter motor. This can also be a sign of a dead battery. An easy check involves seeing of the power windows or radio still work when you have the key turned in the ON position. If they do still work, chances are the battery is not dead, which means there's a good chance that it is caused by an ignition issue. If the ignition switch is extremely hot, this is a big indicator of a problem. What should you do next? If you have determined that your ignition switch is failing, you will need to have it replaced. If our car will not start, have it towed to your local automotive professional. If your car will still start, head on over. It is possible to replace the ignition switch and parts yourself if you are handy and have the proper tools and parts on hand. If you are not familiar with the parts needed or how to install them, your local mechanic can do the job for you. You can expect that a new ignition switch will probably cost between $180-$250. The labor to do the work should cost between $100-$150. If your car seems like it is struggling to start, that is your sign to take note. The first thing to check is your battery. You can use a voltmeter to measure the juice in your battery. If that is fine, then you need to start looking at other possibilities. You may notice that the dashboard lights flicker. If hey flicker while you are driving, this is an indicator of a failing ignition coil. You may also experience your car stalling while you are driving. These could cause you to have an accident, so get it checked out and repaired as soon as possible. Another sign is your key not working. First you should make sure that the steering wheel has not locked up. All you have to do is simply move the steering wheel back and forth a few times. The try to start up again. If the key still wo not work, you need to have the ignition coil checked. You might also notice that the ignition switch seems to be overheated. Anytime you notice that your car is "off", it is prudent to investigate to find out why. It is not always pleasant to deal with car problems, but you can prevent little problems from becoming bigger problems by prompt attention. An ignition switch is a fairly easy and inexpensive repair. If you are not sure how to do it, see your local professional and they will be happy to help you out. You will be back on the road in no time.

Kunshan Tongmao Electronics Co., Ltd. is a R & D manufacturer committed to providing linear and swing motion solutions. Its main finished products are linear motor, voice coil motor and linear motor module and voice coil motor module based on linear motor and voice coil motor derivatives.Among them, the voice coil motor module firmly occupies the "C" position among all products, with strong market performance and high praise from new and old customers.Tongmao voice coil motor module generally moves the mover and the stator does not move. When the primary current is connected, the traveling wave magnetic field is generated in the air gap between the primary stages, and the driving force is generated under the action of the traveling wave magnetic field and the secondary permanent magnet, and then the mover begins to move in a straight line along the stator.The new voice coil motor module is different from the standard voice coil motor module. When the current is applied, the mover of the voice coil motor module does not move, and the stator moves in a straight line along the mover. The module is very suitable for products with load sensitive to temperature.Now, let's unveil the true features of this new voice coil motor module:

AKA Trembler CoilThe trembler coil was a device called a Ruhmkorff or induction coil, widely used in the 19th century.3 It combines two magnetic devices on the same iron-cored solenoid. The first is a transformer, used to transform low voltage electricity to a high voltage, suitable for an engine's spark plug. Two coils of wire are wound around an iron core. The primary winding carries the low voltage battery current, and the secondary winding generates the high voltage for the spark plug. Attached to the end of the coil is an interrupter or trembler, a magnetically operated switch or relay, which repeatedly breaks the primary current to create flux (changes) in the transformer needed to produce high voltage.The switch contacts are on a springy iron arm, which holds them closed. The arm is mounted near the iron core. When battery power is applied, the coil acts as an electromagnet; the magnetic field from the core pulls the iron arm, opening the switch contacts, interrupting the primary current. The magnetic field of the core is switched off, allowing the arm to spring back, closing the contacts again. Then the primary current is turned on again, and the magnetic field opens the contacts again. This cycle repeats many times per second, while power is applied to the coil. A similar mechanism is used in the electric bell.As the circuit opens each time, the energy stored in the solenoid's magnetic field is released and by electromagnetic induction produces a pulse of high voltage in the secondary coil winding. This voltage is sufficient to fire a spark plug located in the engine's cylinder, igniting the petrol mixture.1The difference between a trembler coil and a modern ignition coil is that in a modern coil the primary current is broken only once by the contact breaker for each cycle of the piston, creating a single spark. In the trembler coil, in contrast, each "break" of the trembler contact produces a pulse of high voltage from the coil. During the time the points in the timer are closed, the vibrating trembler arm produces a series of high voltage pulses, producing multiple sparks.This is where MSD got the idea for Multiple Spark Discharge, only they use electronics and modern capacitors to get the job done.Source.• Related QuestionsHow does the collapse of a magnetic field cause a voltage spike?If anyone can answer this they will get a Nobel Prize. All we can do is describe what happens, but no-one has any idea of how. Electricity and magnetism and even gravity have observable effects and mathematically rigorous formulas to describe what happens, but as to the why and how, that is a mystery. What we do know is that moving a wire through a magnetic field induces a movement of electrons. If there are no electrons, there is no voltage, so just a collapse of a magnetic field does nothing at all. However if you set up an electro-magnetic field say in a coil of wire, then place another coil around this, when the current is switched off, the magnetic field collapses thus creating a simulation of a wire moving through a magnetic field. The energy is transferred from one coil to the other. In car ignition coils, the 12 volt coil is thick wire with high current that is surrounded by a coils of very thin wire. When the low voltage, high current electromagnetic field collapses, it induces a very high voltage with low current flow in the secondary coil. The energy is conserved and transferred creating the spark at the air gap of the spark plug. When you create these conditions, this is what happens. How it happens is a mystery, and Einstein was always thinking about this, but could not come up with any theory that could link together all these very strange forces. Others have postulated inter-dimensional forces are responsible, but still with no idea of how or why. When the sun emits a massive cloud of swirling plasma, there are huge magnetic fields associated with the swirling matter. If such a cloud passes close to the planet Earth, there are fields collapsing and forming constantly. These fields will induce massive voltage spikes in any conductor, but especially in any coils of wire. Thus transformers will blow up, and any electric circuits will be fried. The closest we get to this in nature is from lightning strikes, which are massive voltage spikes themselves, and these can induce spikes through proximity, but we are describing the conditions that are needed rather than how. Keep asking and some genius might some day understand how.How does the collapse of a magnetic field cause a voltage spike?------What are symptoms of ignition coil failure?Here are the 6 symptoms of Ignition Coil Failure:BackfiringnIf your vehicle is backfiring, this can indicate early symptoms of an ignition coil failure. This occurs when unused fuel is emitted through the exhaust system. If you do not address the issue, you can also do serious damage to your exhaust, resulting in unnecessary and costly repairs. Your exhaust may emit a black smoke and you may even detect the smell of gasoline.Starting ProblemsnCheck your high tension leads (HT Leads). They run between the distributor and spark plugs. Ignition coil failures result in 1 or more spark plugs not receiving the appropriate amount of charge. If you have trouble starting your vehicle in the cold, this is a good sign of potential ignition coil failure. You can run a simple test on the HT leads to check that there is in fact a spark going from each lead to each spark plug. Fuel EconomynIf your vehicle is getting a lot less mileage for the gallon, it could also be a sign of an ignition coil failure. When less power is reaching the spark plugs, your vehicle will struggle and use more fuel to compensate for the lack of power transfer.Engine MisfiringnTrying to start your vehicle when the ignition coils fail will result in a rough ride. Your vehicle will cough and splutter regularly. When you drive at high speeds, your vehicle will jerk and spit. It will also vibrate when you are running idle at a stop sign or intersection. Vehicle StallingnWith ignition coil failure, your vehicle will have irregular sparks emitting to the plugs to keep it running. This will result in stalling. When you bring your vehicle to a stop, it may just shut off totally, thus leaving you needing to restart it.Coil FailurenIf your spark plugs are worn out, it forces the ignition coils to operate at a much higher output. Keeping your sparks plug in optimum condition can reduce your chances of experiencing an ignition coil failure. Some simple regular maintenance will save you a lot of money in the long run.nIf the gap in your spark plug widens due to normal erosion, it leads to an increased voltage being required to create a spark in the chamber. The increased voltage demands more current flow through the primary circuit and this increased current flow can overload the primary transistor. Keeping all these components in good running condition is also a big help towards keeping your coils in a good working condition.What are symptoms of ignition coil failure?.------Is it possible to visually inspect a spark plug and determine if it's functional? What do I look for?There are several steps in the visual inspection process that will help you determine the condition of a spark plug. However, there is a significant amount of science and engineering knowledge required to take advantage of visual cues. In the old days, one could look at a photo chart to compare what you're spark plug condition is and could cover almost all variables. Those days are long gone. It is important to note the condition of the spark plug will indicate the operating condition of the engine , not the spark plug itself.Spark plugs are a consumable wear and tear component.Almost all worn out spark plugs will still function when they are due for replacement. This should not suggest you keep using them past the OEM recommended maintenance schedule.Advanced materials used in today's plugs specifically for modern engines, do last longer than the previous generation types. This should not suggest using the very latest type of spark plugs will improve the performance of an engine built in 1968. In fact, that engine will probably perform poorly.An example is the use of platinum tipped spark plugs. They work very well in high compression engines with variable valve camshaft designs with high voltage ignition coils. Installed in a 8:1 compression smog with a oil filled coil will fall flat on its face and probably be excessively fouled with carbon deposits.When the correct spark plug is used, upon visual inspection, the most common observations will detect;Detonation (pre-ignition knock and R/M quality)Excessive fuel (rich)Lean (not enough fuel)Oil contamination (piston ring or valve guide wear)Fuel quality (octane performance)Piston condition (metal contamination)Ignition timing (retarted / advance)Ignition performance (coil voltage)One or more of these clues maybe evident at the same time.Photo u00a9 2019 NGK Spark PlugsThe image above covers some of the basics, but is by no means, covers every type of spark plugs or engine configuration. When I build 650 HP racing engines, I test different types of spark plugs that may have a different heat range (hotter or colder), center electrode material, open or closed ground electrode, etc. depending on the type of fuel I'm using or required to use to conform to the sanctioning body set of rules. I can easily spend 20 hours dyno testing different spark plug combinations to determine the right model to use. Happy Motoring!Is it possible to visually inspect a spark plug and determine if it's functional? What do I look for?

i does not risk your existence to at least some thing you imagine truly outputs 20mA. It truly takes 100mA to quit your heart, and that is ideal circumstances. If it is damp outdoors or you are sweating a touch (because you are fearful you are holding a metal rod to 6,000V), then the amperage is going down. And fairly frankly, 6,000V could not make that enormous of a spark. you may get carry of that from a neon signal transformer. Why reduce your Tesla coil to truly 6,000V output? EDIT: ok, even if, your Tesla coil's output will be a lot less, possibly in the micro-amps, relying on how intense your turns ratio is. once you get your coil tuned, the output should be heavily more desirable than the neon signal transformer's output. 6,000V grant you with a somewhat weak spark. a hotter spark comes with modern-day flow. Now to placed that in perspective, an excellent tuned Tesla coil could output in the community of 20,000V to even 100,000V (or extra for more desirable coils). EDIT #2: to be able to respond to your first question, can the most suitable output of the Tesla coil be deemed probability-free? you would possibly want to likely supply it a shot, yet have the rod grounded (copper cord to a sturdy floor) to be probability-free. And carry one hand behind your lower back. you are on your man or woman because measuring ability output at such intense voltages is all theory. you would be unable to degree some thing without ideal equipment. PLAY AT your man or woman probability! a lot of math, a lot of trial and blunder and far of time could be dedicated. It also will be fairly intense priced to do it proper. Google search for Tesla coils and visit the numerous internet sites committed to construction them and exhibiting them off. Many web content are contributors of a Tesla Coil webring. One ends up in yet another1. 555 timer tesla coil help?The 555v just generates a pulse or a pulse train. A Tesla coil generates very high voltage via resonant transformers. They are not related at all. You run the primary of the coil from a high voltage discharge, not a 5 volt signal from a 555.2. Who is Tesla? What did he do that was significant?The famous Tesla was a scientist who did much of his work in electricity and magnetism. We even have a scientific unit named after him as well as the "Tesla Coil"3. What does a Tesla smell like?What an interesting question... As with any car, it will smell exactly how you want it to smellSmoker? You can you last dollar that it will smell like cigarette smokeLike 'New Car Smell'? Well you better buy them fresh tree air-freshenersDo not want it to smell? Buy some OdorEaterInterested in a Tesla? Use my referral code for FREE Supercharging and $500 off ServicingUnlimited Tesla Supercharging and Extended Solar Warranty4. Is a Tesla faster than a Ferrari?No.Ferrari competes at every level of Motorsport. F1 championships can not be argued with. Ferrari is at the top of the world in terms of performance.Tesla does not seem to compete at any level. Certainly not in 24 Hours of le Mans or F1.As far as drag racing goes, give me a geo metro and some nitrous I will beat anything you can buy new from a dealer. With a geo metro. So who is faster than who in drag racing is impossible to keep up with, it comes down to the day and driver, who prepared for a 1/4 mile better. When you've done all of what Ferrari has done, it's safe to say you are faster than some niche company with no racing history5. Are you having a hard time getting service for your Tesla?Not at all. First and foremost, there is virtually no service. Things that do need repair or replacement are few and far between, and (for about 95% of Tesla owners who live or work in ranger territory) are handled by mobile repair techs that come to your house or office.I've had Ranger service several times. A 12V battery, a windshield washer pump and a door handle. All were done without taking the car to a service center.Concerns about service are largely reserved from a vocal but small group of people who are far from a service center and outside Ranger territory. Or from people who do not own a Tesla and are projecting their ICE car service needs to an EV that does not have a huge network of dealers, independent mechanics and oil change centers on every corner. Teslas do not need all that service. But that's a paradigm shift that is hard for people who do not think good.I do know several frustrated owners who fall into the outside-Ranger-territory group. And their frustration is very real. Tesla is working hard to fix these pockets if geography. Are you having a hard time getting service for your Tesla?

Could my ford f150 ignition coil be bad?How about a year and engine. If you are getting a misfire or feel the engine running rough then it's possible that you may have a bad coil. If there is no difference in how the engine runs with a particular cylinder getting no spark then you know you found the dead cylinder and which coil-on-plug to replace. If the engine is just running rough then it would be any number of things. A code reader will usually tell you what can be wrong with the vehicle if it is electrical, fuel/air mixture, and sometimes a fuel issue and will at least help you narrow down the cause. Change the fuel filter if it's been over 25000 miles and the O2 sensors if it's been over 50-75000 miles(make sure you buy Motorcraft/Ford O2 sensors since auto parts store sensors are unreliable and are often defective right out of the box). Fuel pumps are notorious for dying at about 100000 miles or more and will give you low or no fuel pressure. The ignition module is also another common part to go bad.— — — — — —cub cadet 1170 won't fire?Check the ignition coil and see where the small black wire goes. If it is grounded you wo not have any spark. I would disconnect the small black wire from the ignition coil and see if you have spark. If you do not you might have a bad coil— — — — — —i have power to the ignition coil but no spark?REMOVE DISTRIBUTOR CAP AND LOOK FOR ANY DAMAGE PART OR WIRES. NEXT, CHECK RESISTANT READING ON THE IGNITION COIL WITH A VOLTMETER— — — — — —What could be the cause of my car not starting?check the ignition coil, sometimes they do not like to cold start— — — — — —My 1990 Volvo 240 breaks down when it rains. Suggestions?Considering its age (23 years), replace all the high-voltage ignition parts, starting from the ignition coil, distributor, HV cables, plug connectors, plugs. This is likely to sort things out. And a proper general tune-up would also help— — — — — —Can a bad ignition coil make my car start but not run?I would change the fuel filter— — — — — —RV is broken down. What's wrong with it? Help!?Your problem stems from a lack of maintenance and ignoring the warning symptoms of problems starting to occur. The issue of warm/hot starting difficulty is a classic sign of a failing (overheating) ignition coil. They can simply fail with age, but overheating is often caused by a lack of maintenance on the distributor points which require a specified maximum gap; when the points heel wears down the gap gets too small and the ignition dwell angle increases. That in turn energises the ignition coil for too long and fries the internal cooling oil: the damage to the coil is progressive and irreversible. The issue of starting when you release the key is another classic warning sign. It's indicative of an excessive current drain when cranking the starter and that means there's insufficient power being delivered to the ignition system. Made worse by the fact that it may already be struggling with a failing ignition coil. When you release the ignition key the power to the starter motor is cut and the excess electrical resistance falls to zero; but because the engine is still spinning briefly due to inertia the engine can sometimes start. The cause of that fault is therefore usually a failing starter motor which is drawing far too much electrical load, usually due to worn internal carbon brushes. The fast clicks are typical of a failed starter motor solenoid and/or a flat battery: over time the electrical contacts get worn and burnt due to electrical arcing and eventually cannot pass enough current to properly energise the starter motor. Repeated rapid clicking usually means that the battery is flat either due to a faulty charging system, age (batteries usually last 3 to 5 years), or due to short trips which never allow the battery to recharge sufficiently, and if I've been correct so far then your RV battery has had to work a lot harder than usual every time you've started the RV lately. If the battery gets too flat, too often, sulfation occurs and the battery gradually loses capacity and the ability to deliver sufficient power to start the vehicle. The change is progressive and permanent within the battery. The final problem brings us full circle to the ignition coil again. A failing coil gets progressively worse and overheats quicker causing the engine to die until the coil has cooled down again. So: check and replace the distributor points, and replace the points condenser at the same time for good measure. Adjust the points gap and check/adjust the dynamic ignition timing to suit modern unleaded fuels. If the battery is flat and over three years old, just change it. It will already be well past it's prime. If money is tight then recharge it, but keep some jumper leads handy to assist you to start the RV if needed. Get the starter motor tested. But again, substitution for a new/remanufactured unit or a known good one is usually faster and more certain. If the starter has done more than about 80k miles it's going to be near due for a change anyway. These days the starter solenoid is usually an integral part of the starter (as a smaller parallel cylinder to the main starter body) but if it's separate get that tested or substituted for a known good one as well. If you'be been failing to maintain all those items, then it's likely that your RV engine also needs new (and correctly gapped spark plugs), new plug wires (especially if they are soft flexible silicone wires and not stiff copper-cored ones), and a new air filter. Also change the oil and filter if they've not been done for the last 6k miles but if it's been running on fully synthetic oil you can extend that safely to 12k miles. Replace the fuel filter as well. Do not forget that other systems such as the brakes and power steering may be overdue for maintenance, and that the suspension and steering bushes and dampers may be overdue for checks. Look after your vehicle and it will look after you.

Did you check the alternator and battery?1. Is it better to buy a high output alternator, or a separate car audio battery?Instead of buying a new alternator or battery for your system, just buy a capacitor. It will be what your system pulls on for power instead of your battery and alternator, and your lights will no longer dim either. the capacitor will definitely solve your problem.2. Is there any other way to charge a car battery besides Jump Start?get a battery tender they will charge and maintain you battery without the damaging effects of a trickle charger3. how do i "winterize" my motorcycle? Should i just remove the battery and put it into storage?No. it would be very risky, as a results of fact you would be locked away in storage as packaged products and that is very risky for a human. Self storage is for storing away products for a undeniable volume of time, the two by using loss of a place to place them or merely non everlasting lock up till products are needed. (i.e. shifting residing house)4. Do I need to remove sd card and battery from DSLR after every use?The only reason for removing a rechargeable Li-Ion battery would be to prevent it from being totally drained. A totally empty Li-Ion battery can not be recharged by most chargers. This is due to the increased risk of fire when applying voltage to such batteries. In most cases, it should take weeks for a battery to be drained that low. So there is no need to remove the battery each time you are done with the camera. If you store the camera for extended periods then it is a good idea to remove the battery and charge it periodically to prevent it from going completely dead. If your camera uses a different type of battery than the typical Li-Ion type found in most current cameras, then you would need to consider the battery type.On the other hand, there are reasons for leaving batteries in the camera when it will not be left unused for extended periods. Most cameras have a small capacitor on the main board that powers the clock while batteries are being swapped. These capacitors are charged when a battery is installed in the camera and discharge to power the internal clock when a battery is not present. After several days, the capacitor will be exhausted and the time and date will need to be reset when a battery is next installed in the camera. Other information, such as the next available file number or current folder number may also be lost when the internal capacitor can no longer power the internal volatile memory. As far as SD or other types of memory cards are concerned, there's no need to remove them when storing the camera5. Is it safe to disconnect positive battery terminal connection to test for alt/bat problem when car is running?In cars without the electronics we have today, yes, removing the Positive cable to see if the Alternator was good worked somewhat. However, some people still tell you that you can check your alternator by disconnecting it from the battery to see if the alternator can produce enough current to keep the engine running. Disconnecting the battery will subject the voltage regulator (and computer and audio equipment...) to significant voltage spikes which may cause an otherwise good alternator to fail. Even if there were no damaging spikes, this test would not indicate whether or not the alternator was good because the engine will easily run with a weak or failing alternator. Simple Test: If you want to see if your alternator is producing current, turn on your headlights when you are parked and the engine idling with the headlights shining on a wall (at night). Notice how bright they are. Then turn the engine off. The lights should get dimmer when you turn the engine off. If the lights get brighter when you kill the engine, the alternator was not charging sufficiently. When doing this test, the lights should be the only load (turn the stereo, a/c and other accessories off). With a heavy load, an otherwise good alternator may not be able to produce sufficient amounts of current at idle. Another tip: It takes approximately 9.5 volts to start a car. If you hear a clicking sound, your battery is not putting out enough voltage. Your radio, headlights, etc., will all work, so you will think that your problem is your starter. NOT SO. Either you have a weak battery which need charging, or the most likely culprit are your battery cables. Once again - NOT SO. Those terminals and cables are lead. Lead is a shiny metal. Scrap the top of a battery terminal and it will shine. All it needs is to cause a drop in voltage to your starter and you will hear a clicking sound from the starter. Get a good battery terminal and cable cleaner at your auto parts store. The type with the wires inside that will really make those terminals and cables shine. Once you have cleaned them, your battery will put out max voltage. If you still hear the clicking sound, take your battery to an auto parts store and they will check it. It may not be holding a charge or you may have a dead cell. However, DO NOT try and clean your battery terminals with Baking Soda or Coca Cola. I've worked on cars for over 50 years and all that does is clean the OUTSIDE of the terminals - NOT the connection between the cable and terminal. So many people run out and buy a new starter or battery when it is really the connection itself.