Help!!! 1986 GMC 1 ton dually

[tbone1904]

I replaced the stoch stereo with a CD player and then noticed after that the tail light/instrument fuse was blown. I replaced the fuse, but when i pull the headlight switch out 1 or 2 clicks it will blow again. I looked thru everything and traced the short to the power from the fuse box to the headlight switch. I cut the orange power wire going to the switch and reinstalled the fuse and the short is gone, but i have no lights. I havent touched it since sunday and last night i went out to look at things. with all the wires hooked back up again the fuse doesnt blow, but i still dont have tail/park lights or instrument panel lights. any suggestions? The headlights work, high and low beam, brake lights work, dome light, and blinker but none other