You've correctly IDed the high amp fuse array, but test first by moving the N3 lug to the N4 position. Not a permanent fit or fix. Use a jumper for gettting power to the N1 position until any necessary fuse array replacement (2 different model numbers, depending on your radiator fan).
That’s it. Very easy to replace. The engineers were smart enough to idiot proof assembly too. The tabs are keyed and only go back on their respective slots. They’re around $60.
Rhinebeck01. Thinking about this more, this makes total sense. When the Jeep was completely dead it would not take a jump start connecting to the main battery terminals. I was able to jump start it by connecting positive jump cable to the first post on the fuse array, which I understand goes directly to the aux battery. But when I removed the jumper cable, the engine only ran for a few minutes then sputtered out and died. That would support your suggestion that the alternator wasn't re-charging the aux battery. I don't know how you knew the N3 Fuse was responsible for the alternator but I'm appreciative. I decided to bypass the aux battery for now, but will still replace the N3 fuse in case I ever need to reconnect it. This forum is a great source of information! Thanks.
