I can not figure out why my gauge will not work when I hit the brakes, the tack will work but only when I hit the breaks or the turn signal. The fuel and volt seem fine, but the coolant only works when it gets above 180. I have been looking for grounds or loose wires but I seem to get a lot of back feeds. What does that sound like? Does anyone know where I can get a diagram for the gauge wiring? The lights do not work either.

 

I think you have a bad ground somewhere. Under the dash, most likely.

 

Does anyone have a diagram that shows the grounds?