Poweralth

I was able to fix the problem, on the switch pigtail connector I guess the ground wire just wasn't contacting it doesn't look all too broken but I guess being a little bent out of place is enough to make the brake lights not work, I just went to O'Reilly and got some crimp on connectors and those worked like a charm

And to answer the questions: the brake switch just got unplugged from the pedal itself, doesn't look overheated the plastic just looks old and warped but granted I live in an extremely hot part of the US. The tail light was a brake light bulb it just was old I think but i still got pulled over for having a blown bulb and everything worked great after replacing the bulbs

Where would the tail light ground point be at? I'm extremely dumb with electrical work so sorry if it's obvious

A few weeks back after camping my brake lights went out, turns out it was just the 15 Amp fuse that blew. Not even a week later they go out again, this time it's just the switch on the brake pedal itself, then I blew a tail light and got pulled over for it. It's suddenly gone out again and it's neither of the previous problems, switched out the fuse and nothing, as well as messing with the plug on the brake pedal. I'm not sure what the problem could be now as the high voltage side of the lights works (blinkers and hazards work perfect) Has anyone had to chase a problem like this and have any tips or ideas as to what it could be? I'm extremely confused and annoyed at this.

Thank you! I forgot the Vin last night sorry! Its: 1JTMW6417HT098037 I saw that plug and I was hoping that's what it was for! Mine is doesn't have anything plugged into it and I have the lines and compressor and such already. I just need to go grab the control module and the air box assembly. You have been more help than you can realise thank you so much!

After 2.5 summers of no A/C I've finally decided to bite the bullet and install it in my truck. Problem is I can't seem to find a consensus on the stuff I need to complete it. Some posts claim I need certain plugs on my engine side wiring harness and other don't even mention it at all. I know I need the new switches to control the system on the dash but I assumed that's all I needed to tell the ECU to idle higher when the compressor is on. Simply put: do I need certain connections and relays on the engine side of my truck? To make sure an A/C install would work correctly and not break anything. If I can avoid having to swap the entire wiring harness I would like that very much but if not it's just another thing to grab from the junkyard I suppose. SPECS: 1987 jeep comanche base model 4.0 I6 5SPD Manual No factory A/C but it has the brackets and mounts for compressor and I have the parts list ready otherwise.