Magnum and Wiring Swap

I had started a long and all over the place thread that can be found here: Six years should be long enough...
There are three different cars involved in this process. The first was a 1970 Dart Swinger that was too rusty to repair, so it became a parts car to a stripped down shell. Some questionable body work had bone, and both the front and rear inner fenders had been cut and weakened the car. I decided to cut my losses and try to find a complete car that was worth having.
I found a '71 Dart Swinger in the middle of Ohio last year. I was worried that a bad paint job was hiding something, but the car looked better in person and is solid.
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It had a 318 with a Weiand intake, Holley 600 vacuum secondary, and long tube headers. It idled like it had a rowdy cam, but it wouldn't rev.
Short story long, I got it running decent and drove it for a couple of months before pulling that 318 to get ready for the Magnum 318.
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I was originally going to use an engine and transmission from a 1992 B-250 van, but I found a deal on a 1994 Dakota that had a Hughes dual plane intake and a Comp Cam.
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I also took the complete harness from the truck so I could add cruise control, intermittent wipers, and rear wheel anti lock brakes to my car.
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So the process of eliminating what isn't necessary from the Dakota's harness and tying it into the Dart's begins.