I've done my best to cover the basics here. I'm hoping it’s enough to get you started diagnosing your electrical issue. There really is so much more, so if you're interested in learning more, pick up some books or watch some videos on the topic to extend your knowledge of automotive electricity. BTW, the highest-paid technicians are the ones who do electrical and performance diagnosis. I hope to add more videos on this topic to my lineup as time permits. For now, check out these videos, which demonstrate some of the testing and principals mentioned above. Good luck.
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Written By EricTheCarGuy
Edited By Julie Hucke