I recently bought a new 4x4 rear bumper with swing out tire carrier. For now, it forced me to remove 3rd tail light. Been like this for awhile. Even more recently I bought Silverstar HID upgrade headlights. Eveything worked fine for a few days. All of a sudden, without warning I have problems. When I turn the JK on, the headlights automatically come on low beam as well as all running lights. They go off when Jk is turned off. While running, I have no high beams, no blinkers (flashers still work)no wipers at all, no interior light by the switch. Back gate works interior light just fine. Radio backlight is very dim. Can't hardly see it in daytime. I have checked trouble codes...There are none. Does anyone have any ideas or suggestions ? Please e-mail me at Firetek200@yahoo.com.
My jk is an 07' wrangler X 4x4 6-speed manual, 3.8L

 

Try disconnecting both the battery cables and holding the positive and negative ends of the cables together for 10 to 20 seconds. This should clear the computer and maybe correct the issue. If not you might need to make a trip to the dealer.  

Actually, try keeping the cables disconnected for at least two minutes.  30 seconds isn't enough on the JK.

Whenever electrical gremlins arise on the JK, the battery trick is the first thing to try.