visor lights wont come on

[DVT873]

It sounds like you have power to the fuse. With the fuse out one side should be "hot" or light a test light with the switch on. With the switch off the test light should go out. If it does the switch, relay and wiring to the fuse is good. From the fuse, power goes to the lights.

You may have to pull the headliner or trim panels to get to the wiring in the roof. Try popping the trim pieces off the windshield posts. You might see the wiring going up. If you can't it is inside the piller post. My guess would be you have corrosion up in the roof area. Those extension panels don't seal well and water gets in where the wiring comes out of the roof. There is going to be connections up there.