Originally Posted by MickyT
I have checked out the painless wiring to the door switches and there is only one wire running to each so I guess the ground is the metal switch itself. I have tapped into the switch wire and it only has power when the switch is in the in position and the courtesy lights are off. Any ideas how I can hook up the white from the mirror or an alternate place to tap in so it goes on only when the doors are open Thanks
Correct, the ground is the metal threaded sleeve screwed into the door post. Open the door, the circuit is complete, the interior lights light.
Unfortunately, the mirror, if hooked up in its present configuration, the light will work just the opposite, door closed (switch open), new light is ON.
One of two ways to make the new light work as an interior light:
1. See if you can separate the ground side of the lamp socket from the map lights and provide a separate ground wire. If you can do this, then wire 12 volts from the fuseblock, and the new ground wire to a door switch.
2. Rewire all interior lights through an ISO relay and wire the coil of the relay with the door switch. This way when the door opens, the switch closes, energize the relay, and all the int lights come on.