72 wiring harness in a 71

[Arne]

I just installed a 1/71 harness in my car which has a build date of 9/70 and had no problems at all. The only differences were a different type connector for the rear de-fogger and an extra hot connection near the the fuse box that I taped off and two new wires at the light/wiper switch.

Update - By the time you get to a 4/71 build date, the fusebox changes from long to short pigtail. The tail-light wiring is also slightly different by that point.

I still recommend one of two courses on this topic - either find the correct harness(es) for your car's build date, or change it all. I still have some reservations about the wiring on my car, and will save the entire wiring system out of the 4/71 parts car I recently got, to install later if it seems appropriate. (Probably when I strip it for rust and paint.)