I found this site while researching a re-wiring problem on my 54 3100. I had converted it to 12v and used the original wiring but messed up the fuel gauge voltage reducer and probably fried it. Bought a 12 gauge and decided to re-do the dash harness at the same time. I have an aftermarket turn signal switch - 7 wire - and am stuck trying to get my brake lights and turnsignals to work at the same time.

The posts on this site have helped but I am still having trouble. Anyway. I hope to learn a lot about keeping my truck in shape and look forward to some good discussions.