ParadiseComputer
Member
It is OEM you can tell. I do have all the original books and this is not in it. Great, I have a unicorn.
I went ahead and pulled that one large relay and did a continuity test at 30 and 87a, it was open. So I dropped it on the ground and tested it again and, surprise, it was closed. I now have 12 v. at fuse 4 in the mini fuse block (Engine Fuse Module) on the fender well. And with that I have running board lights. So, although the problem is solved, I would like to know if any other owners have that relay block.
Welcome to my world! I too have that same fuse box on my 97' EB 4x4 4.6L. I was having the same problems with my running board lights. I tracked it down to the relay under driver side dash. 2nd relay from top on left side. It also controls the battery saver circuit. I have looked everywhere for explanation of these relays, but found nothing so far. I have a Chilton book for 97' - 03', but no mention of this relay block anywhere, not even in pictures. It may just be spare relay holder, but then again, why would it be wired if it was just a spare.