Step-by-Step '67 Rallye Gauge Cluster Overhaul/Audio System Upgrade

4spdragtop said

Wow, cant believe Charger Specialties reversed the neg and pos?? And they are still being made this way? Frustrating. Thanks for the update.
FYI those schematics you posted are not factory. I discovered with the help of members on here when I started a "rally dash redo" thread. Mymopar should be pulling them from their website!
There is a factory 67 "supplement " that was released after the 67 FSM was printed. I think 30 some pages??
Has a good bit of missing info, as well as 67 barracuda specific electrical schematics. I printed and laminated them. Hopefully get my harness done shortly.
Well done Dennis!
Edit ** i have pdfs of the supplement if you like**

Click to expand...

Wow thanks for the info. Yes I would really like the PDFs if you wouldn't mind sharing. I suspected that what I had wasn't completely accurate, but it was good enough for what I was trying to do, and much easier than trying to read the diagrams in the '67 Plymouth Service Manual. I've found that manual particularly frustrating because almost none of it is specific to Barracudas. They are just lumped in with the Valiant info and in most, if not all cases it's not completely accurate. Just close enough to be dangerous lol. If you know of a good service manual that is specific to the 2nd gen Barracudas, please let me know. I've looked at the Haynes manual that is available through some online booksellers, but that one doesn't seem specific enough either.

As for Charger Specialties, they had no good reason for why the posts are reversed, and it took them a while to even verify that was the case. Apparently they bought another smaller company that manufactured (hand-built) the gauges and PCBs, but did not get all the needed info from the company they bought. The instructions that came with the gauges are sorely in need of updating. Nice units, but you can't go selling something that doesn't match what is being replaced and just not tell the end user. I have not seen your dash thread yet, but I will check it out. Thanks.