dealing with 40 year old wiring harnesses sucks. When I saw the condition of the wiring of my car when tearing it down, I decided to just man up and do a full rewire. I ended up just getting an EZ wire 18 circuit harness. Haven't gotten to the point to install it yet, so I can't attest to the ease of installation but new wire in an old car is a no-brainer to me.