I recently installed an aftermarket navigation/dvd player into my 2007 Lincoln Mark LT. I have a backup camera installed that WAS working. I wired the camera power to the ignition wire in the driver's side floor sill. It was a green/yellow wire. Before I hooked it up I verified that it was ignition power. The test light would light up when I turned the key on and go out when I turned the key off.

My backup camera has stopped working and I have verified the problem to be no power. I check the same wire with my test light and there is NO power anymore. Everything else in my truck still seems to work? What fuse do I need to check? Could it be under the hood? I checked all fuses in passenger kick panel that have anything to do with ignition and they are all good.

Any ideas? I'm not sure what to do.