Power/ Gauge issue

When turning on the headlights (or fog lights) in my gf's acclaim the gauges stop working, fuel goes to fullest extent, and none of the other gauges (speedometer, battery temp) work, my guess is a short maybe? any suggestions? I checked the fuse to the gauges, its fine...

the instrument cluster could be bad, you can go to a junkyard and pick that up, though it might be hard to find.