Ok, I am assuming you have the switch panel removed from it's screwed in position, but with the sockets still connected to the switches.
With your meter set on VDC, unplug the light switch socket and check the pink wire to ground and see if you have power. Next, plug the light socket back onto the switch, set the headlight switch to the middle position and check the double pair of black wires to ground. If there is no power, the light switch is the problem. If you do have power, you can go to the dimmer switch to check the dimming circuit.
One of those two black wires from the headlight switch then runs over to the dash dimmer switch on the right blade as you look from the circuit board side. Unplug the dash dimmer socket and with the headlight switch set in the center position, check if you have power to ground. If you do, then plug the dimmer socket back in and with the dimmer switch turned fully counter clockwise ckeck the tan center wire to ground and see if you have power. If you don't, the dimmer switch is the problem.
To check the dome light with the switch panel out, you will need to connect a jumper wire between the metal switch panel frame to a ground point. Now you can turn the dimmer switch until you get the click to lock on the dome light. If that doesn’t work, the dimmer switch is the problem. You can take a second jumper, connect to the double yellow wires to ground. That will be bypassing the dimmer switch and should like the dome light.
The screw on the bottom of the switch panel that is closest to the door is what passes ground from the dash frame to the switch panel. Without that screw in place, the dome light won’t work even if the dimmer switch works properly.
I hope that helps narrow down the issues.
Slotts
