Sooo this is frustrating as all heck.
Just finished installing my genright tube fenders on my 2000 TJ and im so impressed with this product I can't believe it. The jeep looks like an entirely different vehicle. However, these fenders came with LED turn signals and a signal relay to allow the LED's to blink. I installed them and to my knowledge, properly. I wanted to go cruise my jeep and it won't start. I turn the key, and nothing happens. The only thing different is that I have an airbag light come on my gauge cluster. I tried disconnecting and reconnecting the battery and it didn't work, and yes the battery is good I load tested it. It doesn't make sense to me, any ideas as to what happened would be appreciated!!
did you have to move the fuse box out of the way? you may have knocked something loose in the fuse box when you where changing fenders theres a asd relay fuel pump relay? that could be disturbed. i really cant imagine how the leds could effect it but anythings possible. i would start checking fuses and relays. does it crank if you jump the starter relay?
When you turn the key to the run position, what works and what doesn't? When you turn the key to the start/crank position what works and what doesn't? Does the starter turn over but it doesn't start? Give us more info and we can help a little better maybe.
When I turn the key all the way on, nothing happens. What I mean is, gauges move to where they are supposed to be, fuel pump makes noise, it just won't start at all. The only clue I have is a light on my dash that says Airbag that was never there before.
I tried disconnecting the battery (both terminals) for upwards of 6 minutes to see if that would reset the computer and no luck. The only wiring I touched was re soldering the LED turn signals onto existing wire leads, and installing a turn signal resistor underneath the steering column to allow the LED's to blink.
Look where you did your cuts on the battery side and make sure you didn't slice thru something. Its very easy to cut thru something with a Sawzall or cut off wheel and not know it. Check the relays and fuses too for the ECM.