94 wiring problem

alright this sounds dumb. iam swaping the cab on my 94 silverado because i rolled it. the new cab and everything is on. now iam doin all of my wiring and am stuck on four, they are brk blue, lt blue, purpleish brown, and light yellow. they start in my guage cluster conector and run off. where the hell do they go? ive read many wiring diagrams and am still lost.

Is the new cab a exact replacement? Same year, type (meaning GMC or Chev.), does new one have different dash options..(like gauges, indicator lights,...etc.)? Even if something like the new cab coming from a diesel powered truck would be different. You would have glow plug indicators.....etc. So give me all the info you can and I will look it up. I am pretty good with electrical & powertrain management wiring.

its not the cab. i did a bare cab swap, there was nothin at all on the new cab i used all my old shit dash ect.

brk blue? i'm assuming you mean dark blue. purple brown? could it be tan? or faded lt. brn? I would also assume they are all 18 guage wires? What is the exact model options?(like A/C, power windows,dual tanks...etc.) best thing to do is right down all those RPO codes in glove box (sticker) that way I can reference the correct diagram from my books. Most books give deisel and gasoline versions frm each year, there is alot more to it than that.I can help if you supply the info.Also give me engine type and injection type (or carburated).