Father-Son 1974 Duster Project

I am not disagreeing with dragdak but I am a bit lost on your harness. I am just learning the wiring, but what I am not seeing is the piece for the engine harness that plugs directly into the bulkhead. There are three one to motor, one to lights and accessories, and one to wipers. None of these are cheap. The forward light for my 72 isn't even made new yet. Took me 6 months to find one with pigtails for fender top turn signals. Engine harness you can buy, new or used. Try to match everything up with what your car had. If you haven't gotten one, a laminated wiring diagram will help you. I have one taped to the table with all my parts at the shop. If I get there today I will send info on it.