Jason K: Where is the fuse that control the sun visor lights on my 2005 Tahoe and do you know what size ….. thanks
Sparky: The vanity lights are supplied power from the BCM on the orange wire. The BCM is supplied power on multiple TBC fuses in the underhood and interior fuse boxes. The overhead MAP and Reading lights are also supplied power from the orange wire. If they work the BCM is okay and you have either a wiring problem on the power side or a lack of ground on the black wire.