Hello, I have read thru this thread a few times. I just want to clarify something, and ask a question as to how it works.
It seems there was different posts on how to successfully wire up a 3g alternator in a fox mustang. It seems as if it depends on whether you are going to reuse the existing 2g harness in the mustang , or if you got a 3g pigtail harness.
If you intend to reuse the existing harness, then the connection that has the two black orange wires gets taped up on one end, and remain connected on the starter relay at the other end, while the black white wire can either get cut and connect to stator port on alt or can have a Y splice and still connect to the stator port. ANd a 4 gauge wire runs from alt power post to mega fuse to starter relay bat terminal or directly to bat post. The other connector from the 2 g alternator gets hooked up to the 3g alt the same way with no modifications.
if you got a new 3g pigtail with your new 3g alternator, the new pigtail has a black white wire that just loops over to the stator terminal on alt, a yellow wire that loops over to the alternators batt post on the back of alternator, and the green wire gets connected to the green red original harness wire in the other connector. And the other original 2g harness connector gets all three wires taped off.. the two black orange wires and the white black wire. And you still leave the other end of that connector connected to the starter relay, even though your not using the black orange wires or the white black wire, because it has a fusible link in that harness that the green red wire is also somehow connected to.
what i don't understand is what the wiring does, and what the sensing wire does, and why certain wires need to have fusible links,