QUOTE(ClayPerrine @ Nov 3 2008, 06:50 AM)
The dash lights are also hooked to the same circuit as the rear trunk light, and the license plate lights. If the sockets in the bumper corrode and short out, then the dash lights will go out. If you look at the back of the fuse box, the connection on the cold side of the fuse has 2 wires, one black with a blue tracer (doing this from memory, and I can't remember the color of the other wire). If the fuse is not blown, then check the rheostat in the headlight switch. If the fuse is blown, separate the two wires, and hook up just the dash light wires (black with blue tracer). If the light work, then start looking at the license plate wiring. If the fuse blows again, then start looking at the dash lights.
hope that helps.
Thanks for the pointers - license plate lights were working fine (last months problem). But found the problem - hot wire in defrost indicator light was touching the ground screw - easy fix (tech tip #708)