You need to start a new question, and PLEASE! List the engine size, transmission type, and mileage. We need that information to look up the correct wiring diagram, and to make generalizations for things affected by age and mileage. This was an old private conversation between just a few people. None of the other experts are going to see your addition of have a chance to reply. That doesn't get you the help you want.
I'm not sure what you mean by "both" wires. If you mean the 12 volt feed and the ground wire, if the ground wire has voltage, it has a break in it. That could be a corroded terminal where it is bolted to the body sheet metal, a corroded terminal in a connector, or a cut wire. Also, I can't see if you're using a test light or a digital voltmeter, where you have the test leads connected to, or anything else that could produce erroneous results.
Tuesday, April 11th, 2017 AT 4:22 PM