Looking at the wiring it appears that the issue could be the ground or power connection. What you can try would be to get a test light, then carefully use it to touch the center connector in the lighter socket to see if there is power there.
I would probably err on the side of caution and slip the probe inside a straw or similar just to be sure you don't ground it to the outer shell by accident. If you have power at the center pin then it's likely that the ground wire, white wire with black stripe, has failed. If no power then it is the gray wire that is the problem.
As for a circuit to use, you could use a fuse vampire connection, That would plug in where the cigarette and radio fuse is and then you add a second fuse to power the tapped circuit. I generally don't like using them as they can cause issues but it would be a reversible item instead of finding other wires to tap.
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Tuesday, July 7th, 2020 AT 3:51 PM