led dome lights

Matthew Sermini said
everything is all stock and untouched. i did a v8 swap, but all of the wiring is all the same. the only changes i made was adding a tachometer and oil pressure gauge. i appreciate the info, i will definitely take a look, and the beauty of also having a 75 duster is i can compare the two headlight wiring systems. i'll write my findings.

I suspect the only difference in headlight wiring may be an increase in the wire sizes to the headlights.
Even though Chrysler adopted the higher draw 6014 headlamps around 1973, for whatever reasons, the A-bodies continued along with 18 ga wires from hi/lo switch to the lamps. (The headlight circuit breaker is 15 amp). I'd like to think at some point this was finally changed but I dont think it was. When new, and for the first 5 or 6 years they were adequate. I had a '75 we bought used. It was a dark night on the interstate coming home from school when the headlights blinked out. That was around 1985.

Re: 1976 Main circuits.
This is a work in progress. Its based on the factroy wiring diagram and photos people have posted. Unfortunately the people who are posted had damaged harnesses and/or gave up. That makes it difficult to verify. For example it would be helpfu lto know if the main junctions are splices or at terminals. (In the illustration they are shown as splices but that may not be correct)

I beleive the shunt is just a known length of certain diameter wire.