Sorry for being long winded but here is what's happening:
An error message appeared on EVIC - left rear turn signal bulb out.
Right blinker flashes fine
Right brake light no problem
Right tail light no problem
Left front front turn signal & in cab indicator flashing twice as fast
Left rear blinker not flashing
Left rear brake light out
Left rear tail light out
BRAKE CONTROLLER at 1/2 voltage
This goes on for a couple of days then the light comes back on & the code clears. It works fine for a while then goes out again - apparently at random intervals. No correlation between having the lights on / off, trailer hooked up or not. No correlation with the brake controller plugged in or not. All of my electrical & mechanical mods have been in place for over a month so I rule that out. Besides, all are on a completely separate circuit so I see no relationship.
The issue just started after a wheeling trip in San Ysidro with some minor crawling & a pretty bad washboard road.
My first thought is that this is appearing to be a bad ground but I just want to see if anyone has had this issue since I am not sure of the power path (through the computer?) & if it is grounded (through the computer?) to the chassis in the near vicinity.
Were this my old ford, I would think flasher but I doubt there is an actual flasher to replace on the JKU. I would also think about just grounding the bulb assembly to the chassis with a splice but, that would not (I think) address the error code. Anyone with the Blinker Mod have this issue? My connections look fine.
I am not looking forward to removing my mods before taking it to the dealer but that is the next course of action. I do not believe they are affecting the flasher circuit but do not want to have the conversation with the dealer