Wiring issue

[Ron Dame]

I am having a wiring issue on R1092 around the voltage regulator: After some work all around the engine bay, I had a no-start condition: the ammeter pegged negative and the starter did nothing. I checked around, and long story short, I removed the yellow with black tracer (22E on the diagram) , ignition switch to regulator from the regulator and it's all solved except the car does not charge. I find no shorts in the wiring (yet) so is it regulator or alternator? Second, there is another wire to the same terminal on the regulator that does not show on the wiring diagram. It is heavier gauge, either a yellowed white or a pale yellow and looks original. What is it? I left it connected and had no issues.

Edited February 12, 2018 by Ron Dame