I have a 93 Mustang LX and just the other day the dash lights stopped working on my daughter. The fuse was blown and replaced and still not working. All the other functions work as the idiot lights come at start up. I pulled the dimmer switch and it appears to be working okay as I have power coming out of all wires when the headlights are on and the blue/red wire will dim the testing light as it's rotated. Not sure what else to look for. Any advice?