same problem.....on 92 Cherokee Laredo
I am having same problems. It started out with the 30a circuit breaker getting extremely hot. I pulled the circuit breaker from the fuse box, let it cool down and plugged it back in....The it sparked! I have checked the fuses, relays, and alot of the wiring. I did a continuity test and found that I have a positive wire grounding somewhere. Most of the Battery connections on the fuse block show continuity with the chassis ground. Any suggestions would be great!