Porsche 911 SC - engine wiring harness - Pelican Parts You might be best off rebuilding yours. Pelican shows the 911SC engine wiring harness as NLA. I called a few years ago on an '80 SC wiring harness (when I owned one) and I was told at that time that there was one left in the world.Engine wiring Harness911 sc Wiring in processEngine Wiring Harness Replacement Options1983 911 SC engine wiring harnessSee more results Used Engine Wiring Harnesses for the Porsche 911 Used Engine Wiring Harnesses for the Porsche 911 for Sale. Get a great deal! Our used auto parts locator service will help you get a great deal on the used Porsche 911 engine wiring harnesses you need for your car, truck, SUV or van.