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Old 12-04-2006, 06:36 AM   #9
Vanagon-tom
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Re: Alternator test and battery drain test?

Quote:
Originally Posted by UncleBob
you don't use a test light. You just pull fuses and watch the multimeter until you find the one that causes the most significant draw.

Of course if you have fuse block inside the car, you will first have to pull the fuse for the courtesy lights, because when you open the door, that will create a draw.

Also keep in mind that not everything is fused (depending on the car) the alternator, for example, is often not fused, so if you run out of things to check, make sure you remove the wires going to the alternator, but if you do it with the meter hooked up, be careful, because the big wire going to the alt is hot
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