Ok so just got my 87 t/a running perfect, I took it done the road and all of a sudden all my gauges went dead and I had something plugged into my acc power in my fuse box and it went dead too, but my power windows work.....its almost like half my fuse box went dead any ideas? And yes I checked the gauges fuse

 

Did you check the actual ACC fuse? It is rated at 20 amps and powers a lot of hot-at-all-times accessories, such as the cigarette lighter, horn, power door locks, power mirrors, power seats, dome light etc.

Your gauges are powered through a different fuse via the ignition switch so it is a completely different circuit and that's what is puzzling me.

Has anything been done with the fuse box recently? Any loose wires in it that might need re-crimping?

I think the best course of action would be to take a test light and probe the fuse box input wires for power to see where the problem lies.

Let us know what you find.
Lou