Did you have a chance to perform the aforementioned test on the alternator? If so, let me know the results.
Also, at the alternator, there will be a black wire. That wire should have voltage at all times. I need you to check that for me. Just be careful not to short it to anything.
I attached the wiring schematic below so that you have a reference. Note the black wire is fused by a 180-amp fuse right from the battery. If you find there is no power at the alternator, confirm that fuse is good.
Let me know what you find.
See pics below.
Images (Click to make bigger)
Friday, February 9th, 2024 AT 5:22 PM