All of those systems share one main fuse #12 it is a 40 amp in the power center. They also share a few grounds that all go back to the main ground bus bar, but the lights are on a different ground.
I would start by verifying that the power from fuse 12 is actually getting through. It would not be the first time a fuse connection got hot and lost contact in the box.
Then try running a ground jumper from the cigarette lighter ground to a known ground. 40 amps could have burnt off a small wire.
SPONSORED LINKS
Saturday, September 30th, 2017 AT 2:56 PM