You could do your wiring very cheaply if you took the wiring loom out of another car or truck in a salvage yard.
Just make sure that the donor vehicle is bigger than your truck so that the cable runs will be long enough.
Once you've removed the complete harness you can cut it open and rework it for the circuits you need. then just bind it with non-adhesive loom tape.
Using a salvaged harness as a basis also gets you the plug in boards for relays and a modern style fuse panel too. I used the wiring harnes from a late 80s Rover when I rewired my truck. It worked really well once I had removed all the circuits (electric windows etc.) that I didn't need.
Stuart.
Last edited by Stuart_Giles; 08/18/2009 1:37 PM. Reason: punctuation