dash lights

Need help with gauge gremlin. Sometimes when I turn my headlights on the gauges peg out and the gauge lights don’t come on.usually I hit the bottom of the dash To get them working.so I figure a bad ground. but I can’t seem to locate where the bad ground is. I’ve ran isolated grounds for the...

Has anyone swapped the dash from their LS donor vehicle and installed it in their G body? It looks fairly straight forward. I think I've sorted the wiring for all of it. I'm curious about the dimmer switch. It looks like it's a pulse width modulated signal. I'm sure I could take the dimmer knob...

Hello. I'm restoring the dash of my MonteCarlo 81. There is a light for the "Check Engine", but behind my dash there is no terminal (for the check engine line) on the connector that connects the dash to the fuse box. So, i'd like to know how does the "Check Engine light" works, and if there is a...