Ok I have an 89 xj 4.0 limited package. The other day some told me I had left me lights on. And I saw my brake lights were on and I couldn't get them to turn off. So I unpluged the brake light switch for now. I'm thinking its a ground but it would help if some one else has had this issue and knew where it was to save me some time!
Thanks!

 

Sounds more like switch issue I know if there not sitting correct on bosttter rod they can act up ive hit mine b4 causing this .hook it back up and have someone watch lights move switch up and down on pin it rides on .

 

Will do I just put the switch in about 6 months ago so that's a good possibility. Thanks!

 

They gotta sit just right its a crappy set up .

 

This was happening on my 99 JGC when I bought it...I just now read this and went out and adjusted the switch "plunger" out a notch till it clicked and it seems to have solved the problem!

 

If you got a parts house Brake Pedal switch then it could very well be bad after 6 months. I went through 3 of them before I wizened up and spend the $3 extra to get one from the dealership.