gm dash

[smoken5.7olds]

okay guy,s need some tech help on a 04 gasser dash!!!! budy hooked to a trailer that was wired wrong blew fuse for lights and dash quit.the high beem light stays on all the time and the engine light is the only thing that work when u hit the key no gauge funtion at all . is the dash cooked or is there a back feed causing the problem???? help