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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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I hope this information was useful to you.  If you didn't find what you were looking for, type in a few key words into the search at the bottom of the page.  You can even type in specific check engine light codes.  In addition to the code meaning you may find articles and forum posts that pertain to that code.  If nothing comes up for your issue, sign up for our forum and ask your question there. We'll be happy to help if we can.  It's free, all you need is a valid email address.  Just be sure to respond to the conformation email to complete your registration.  If you don't see the conformation email, check your spam or bulk folder, it might have gotten stuck there.  

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Written By EricTheCarGuy
Edited By Julie Hucke