So here is what is going on; it started with the occasional light indicator on the speedometer cluster going on as to indicate a blown bulb outside, the marker light outside is barely lit. Just went away....for a week, next I get in to start in the morning and the display is lit up, both turn signal indicators, high beam indicator and seatbelt indicator. Just trying to troubleshoot and hit the flashers. The spedo. light is blinking on and off with the flashers.......This morning I get in and no power to the fuel pump. I then started the self diagnostic and that all of the sudden it let me get power back to the fuel pump and start the jeep. I've cleaned everything, computer, fuses, connections, tried grounding to the dash looking for a bad ground there....nothing.. Anybody have a clue? I also replaced the light relay switch but not the rheostat light dimmer. It seems like a short somewhere, maybe a ground? also maybe computer? Please help...its my daily driver
I'd start off by running some new grounds. It may not be the main problem, but at least you'll get it to fail with more authority.
Get a bunch of 10 gauge wire and run one from the battery negative to the firewall, another to the grill, and replace the one to the engine itself. See http://www.jeepforum.com/forum/f8/be...hammer-833631/ for more than you could possibly want to read about why redoing all the grounds might be a good idea.
So after a lot of trouble shooting, I was able to get the old girl fixed here's what it was.... several things were going on at once which made it hard to diagnose. the first, the lighting issue was due to a corroded circuit board ribbon on the back of the speedometer cluster, also one of the marker light sockets was bad. The fuel pump issue was simply a very dirty fuse, the accessory fuse to be exact. She is up and running strong. Thanks for all the input everybody