I put a complete universal wiring harness in my 47 Desoto w/318/833. I got the one made by speedway motors it was the cheapest I found. It was the fewest circuit harness they made and I didn’t use all of them. The plug for the steering column was for a GM column. I had to cut it off and figure out how to make it work with the 88 Dakota column I put in the car. It wasn’t that hard to do and it was my first time wiring a complete car. Speedway harness’s are worth checking out IMO.