Electrical issues are a mystery to many DIYers, as well as some technicians. I think it's because you really can't see or touch electricity in the same way you can with other working components on your vehicle. Sure, we can see the effects of electricity, or the lack of effect in the case of a failure, but we can't necessarily put our hands on it like we can with other vehicle components that might fail. For that reason, we need to have a basic understanding of electricity and how it works in automotive systems before we get started.
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