I have a 93 Cherokee, the brake lights, hazard lights, and reverse lights have decided that they do not want to work anymore. I have checked the fuses, the brake switch, and the hazard flasher, none of them are the problem. I am now at a loss, I have no idea from here can anyone help me out.

 

Your reverse lights might be your Neutral Safety Switch if you have an automatic. Just an idea.

 

I had a similar issue and checked all of the same stuff you mentioned even replaced the switch ....felt like an idiot when I checked the bulbs....all blown. Don't know what would've done that, but hasn't been an issue since.

check the bulbs

 

I just had an issue like this on a dodge pickup dont know if they are the same but it was a little wire connected in with the positive battery cable that was corroded through inside the with cover. Like i said dont know if they are the same but might help. x2 on bulbs also

 

I did forget to say that I also replaced the bulbs just to make sure that was not the problem

 

Found the problem. Someone had spliced a trailor harness to the tail lights. At some point they were just cut off and left hanging, so the wires were grounding to the body.