I am having issues with my charging system and have not been able to find answers (after much searching). My Jeep was starting and showing 14V, then dropping to 9 and showing the check gauges light. After shutting off and making sure I had all good connections I started again and several times it was fine, then it would start and show 12V and then drop to 9 again after 200ft driving.
I figured it was a bad alternator so I got one from autozone that is a 136amp from a 98ZJ. I ground the brackets down to get it in but the wires to the back are different. The jeep has a green and green with black stripe that go to the plug but the new alternator has only 2 unmarked studs to attach the wires to.
Help!! The jeep starts but has the same issue of only showing about 10-12V while running. Any help would be appreciated.