So my grandmother gave me her jeep and I'm fixing it up. I noticed it had no brake lights so I checked the fuse and blown. Soon as I stick a new one in it blows immediately. I've unplugged both lights at the circuit board thing on the brake lights and still blowing fuses. I've took the dash out and all the wiring looks fine. I put a new brake switch on and that didn't fix it. Any suggestions?

 

A 2003 would be a Grand Cherokee , so you'll have better luck asking on https://www.cherokeeforum.com/f91/

You might have shorted wires in the wiring to the 3rd brake light on the hatch.

 

I'm new on here so I didn't know where to post and ask for help. Thanks! I just bought a power probe ect3000 to help me. 3rd brake light wires are fine also.