Hey folks, I could really use some advice...

I've got a '86 mighty max, 4wd, G54B engine.

M problem is with the #8 fuse, it blows immediately when i turn the ignition. I believe it's connected to the turn signals, fuel gauge, temp gauge, and headlights (these are all dead). My backup lights and 4wd indicator lights are out, too.

Any tips for how to go about solving this? I have the original dealer manual with wiring diagrams... Or should i take it to a shop come Monday?

Thanks!