74 Dart 360 Sport

I would keep it as well , mine was toasted from previous owner being foolish an no skills with wiring and made it worse , but I found another wiring harness same year uncut for identical setup , I can repair my old if I need to as I have one now to go by to fix the burnt wires if I feel the need , but wiring is not complicated to repair unless burnt up an melted ,
Pull out your old harness and start tracing out , could most likely repair , use solder style connectors , these connectors work great for repairs and all you need is a heat gun and save the old harness .
I won't reuse it but it's good for reference I figured. Or if someone else some wants to go back to it later. I have an HEI-coil on distributor one wire, switching to a single wire alternator won't have an ECU. No AC car and rear defrost. This car can't get much simpler. My lights were doing bad things,. Often would not start and relay and starter battery cables all new. All that interlock crap was very old so hopefully this will cure that condition once and for all. Replacing column ignition switch as well while I do this. Oddly enough my turn signal switch was in great shape looked replaced. I had wires falling out of bullets if you scroll up and I had meltdown by headlight switch and dash when I got it open realized it has been getting wet for decades. Like many others told me you don't want to be on fire side of road get that out of there. I had hoped to save like you mentioned but realized it's not safe.