Pulled the bulkhead connector that covers the gauges. Everything feels fantastic, not loose, all wires are pushed in solidly, nothing is wiggling, no corrosion. I see no damage (those dark marks on the female end cleaned off, not scorched). Put everything back together after a quick clean-up with contact cleaner. Nothing.

Still stumped.

As I understand, the gauge cluster grounds to the housing itself. I know I'm getting power to the gauges for sure...when I hooked the battery up and keyed the power on, I saw the oil pressure gauge tick up slightly and stay there, and with the fuel tank and sender out the LED is still flashing away for low fuel. Is this looking like a case of adding in a ground at this point?

I spent ten years wiring helicopters, and Chrysler gauge clusters just kick my .