I'd like all of your input on this because there must be something that I am not understanding!

1) Was recently working on the brake pedal and accidently broke the brake switch. The symptoms were that the passenger (only) brake lights and third brake lights were constantly on - even with the Jeep turned off. The driver tail light as a whole did not work. No turn signal, running, or brake lights. But the passenger and third brake lights were stuck on.
2) So replaced brake switch and problem solved.. partially?
3) The new brake switch was able to get the passenger and third brake lights to turn off and would only light with brake pedal depressed. Passenger turn signal = works. Passenger running lights = works. Passenger brake light = works. Third brake light = works.
4) But now the driver tail light is only partially working. Driver turn signal = hyper flash but no lights turning on... Driver running lights = works. Driver brake light = not working. Everything passenger works correctly though.

I do have LED tail lights but they have worked just fine for me for the past 2 years with no issues. I know if you Google hyper flash, it'll say either change bulbs or add a resistor but tail lights were working just fine up until brake switch replacement. I've checked fuses and all looks OK. I also tried inspecting the tail light wiring harness and I think it looks OK, but again, everything was working just fine up until brake switch replacement. I have also tried disconnecting battery but nothing changed with the tail lights.

Does anyone here have any other possible ideas? Is there a possibility that there's another electrical component that ties in the brake switch and tail lights - specifically turn signal for driver side? Is something else broken now?

 

I am having the same problem on my Jeep. Although, my problem randomly appeared while I was moving apartments, not due to any break switch manipulation/replacement.

if you have solved this problem, I would greatly appreciate a reply.

 

@VeryRoughCountry Nope, still haven't figured it out. On a different site I had asked this same question and was advised to replace the brake switch with an OEM one that did not solve the issue. I also tested each tail light individually and both lights work. I plugged them into the passenger side and both function correctly. I've read the sometimes the grounds can become gunked up and have intermittent connection. Using a multimeter you can check and make sure they're good. I have been driving without my driver side turn signal for a couple of months... ugh. Shops near me charge $200+ just to diagnose electrical issues.

 

I ended up fixing mine by doing the following:

1. Unhook and remove tow hitch wiring harness.
2. Clean corrosion on the bulb connection with wire brush.