I had an automotive electrician change out all the regular bulbs in my 2005 KJ Limited to new LEDs. All worked fine and I was very pleased with the results. A new 3rd brake light with LEDs was ordered, along with a flashing module that had various options for the rate and duration of flashing the 3rd brake light. When it finally arrived, I took it back to the electrician for installation. First thing he did was to remove the old 3rd brake light, then strip a short section of the white wire, which was to be tested to see which of the flash module wires was to be attached to it. Before he could do any testing though, the rear lights all went out. They all previously worked and were less than 2 weeks old at the time. He checked fuses, removed the LED brake lights and tested them... everything seemed to test okay, but with everything returned to the condition it was in when I first drove in, none of the rear lights were working still. It was supposed to be a very quick install, so it was late in the day. He was frustrated and I could see that he was not feeling well - turned out he had a bad tooth bothering him. So, I suggested it could wait until Monday and he gave me a ride home while my KJ languishes in his shop for the weekend. I emailed him a link to the 2005 KJ service manual. I told him I would look around for similar issues, but haven't found any. My hope is that one or more of you might have some ideas what might be causing this problem. Thanks for any help you might offer.