My 1969 911T has a wonderful one year only wiring harness! This ground wire was not hooked up in the engine bay when I took out the engine, when traced it runs through the tunnel and comes out near the pedal cluster. That end is not currently connected either and I can't see where for it to go? Any ideas where it should go or is it just not used and I forget about it? I don't see it on the Prospero's Garage 68/69 wiring diagram either?
Engine bay side:
Through the tunnel near the pedal cluster:
Cheers
-Kav.