Martin - these trucks had mosta the wiring come out the drivers side of the firewall, branch off to the regulator, and run up the inner fender to the generator, horn and lights - if yer truck is way different than the harness ya got, maybe it was "jury-rigged" long ago when the originals were no longer available, and not yet being repro'd - or maybe GMC was a bit different than Chev [which is what the harness will be for, tho it worked on my 46 GMC] - if the layout seems to cover the under-dash stuff and reaches everything under the hood, make it work! if it really is waaaay off, maybe they accidently packaged up a harness for a much later truck . . . give'em a call - and let'em know yer a stovebolt.com custie that expects great stuff!!
- and welcome to the garage, where yu'll find the answer to all yer old bolt questions - Rob the kook will know if the GMC wiring is different than Chev . . .
Bill
