One real good way to rehab existing harnesses is to lay them out on a plywood board.
There's a few threads here by members who have done that.
here's one with a couple photos
I had the instrument panel harness out of my '67 and just laid it out on the workbench. There was just a few things that needed fixing. The only thing that's a little stressful with that harness is there is very little extra in the wiring for strain relief. So in some places I had to splice in to be sure I didn't cause a mechanical strain.
View attachment 1716041507
If you want to do that, the folks who have done such things are answering that.
Just be aware that the Chrysler wiring was the traditional approach. Alternator output feeds the car first, any battery recharging second. Bonus was no fusible link needed on the supply line from the alternator.
Yes, but I'm not sure if a Barracuda could be ordered that way in '67.
Four speed manual transmission does make a difference although is not difficult to alter the reverse light to the 4 speed circuit.
There's a couple threads where we unwind that mystery - I can dig them up if you want.
The harnesses are as follows:
Engine bay - that pretty much covers everything except - Battery cable & starter solenoid harness and the neutral safety wire.
There was an engine bay harness without the optional tach wire but the M&H repops (when I bought) had it regardless. ('67 only)
Instrument panel - that covers everything behind the panel including the fusebox and the door switches.
- If the car was equiped with a center console that had a sub harness.
Body - this connects in the drivers kick panel and will cover the dome or courtesy lights and connect back to the tail lights, back up lights, fuel tank sender.
The 67 Barracuda supplement has the rally dash and the fast back body diagrams.
Even a bigger help IMO for working on the harnesses was the factory assembly drawings. I found those helpful with routing and support etc in spite of the poor quality of the publication.
A lot of phtos and examples of the assembly drawings here if you are interested
[URL][URL]https://www.forabodiesonl...ing-for-our-‘67-b’cuda.511930/post-1973808848[/URL][/URL]