1994 GMC Rally Wagon 2500 Questions

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Ok now I went last night and diassembled the dash again and I have not come across any pinched abused or missed harnesses. could it be the order of the wires I'm puting back on the switch? Theres a spliced two headed yellow medium thick wire, two seperate orange meduim thick wire, and one black wire. on switch says aircraft and the othe illu.lghts. black, two option switch with red color code on the side of the buttons.also the fuse is still active. -sig-

Salutations finally!! I missed you guy and gals (hopeful there's gals). Well now, I finally got the steering wheel column in place and Ive been driving it swell. But now the aircraft light & switch, reading dome lights, power seat, and television dont work, also the left side of all my radio speakers dont work. Hooked up all the harness right and now blow fuses. It was working before i dissembled the dash board and now I cant tell is I missed a special harness or is it a relay or blah blah blah... Please help!!

Trying to figure ways to test the fuel pump gauge. It falls in front off the full icon and doesnt move at all Doesnt twitch apon start up,,,nothing. Is there a relay? Not fuse I that I know of.. Fuel pump assembly maybe or bad ground?? Im a girl just trying to be direct with my search, first time working on a van:) Also I hooked up an after market radio and it plays but gets really hot.. crossed wire huh? no static on connection of the speakers... Fuses are fine. No original harness.