Going to need way more information then that.... Was the manual transmission mad at the battery or something?
But seriously, we need more info, any work done ot the Jeep lately? year, what was going on when it set fire?
I have two sets of lights and the winch but very very well done. Never a problem. My 3rd gear went out on a 12'. They replaced it the whole transmission Tuesday. Yesterday I was driving in town. All the dash lights..engine, battery, others started going off. I stopped. Smoke under the hood, opened it and the harness, negative was on fire. No auxiliaries..lights, etc were engaged or on. Grabbed the extinguisher and put it out. I am so so glad I got the thing. But on the other side, driver behind the bumper I had red fluid. either transmission or pwr steering just poured out...at least 3 quarts. So could it have caused, shorted? I'm not sure. Dealer has it back so I have to wait.
Maybe a wire got pinched between the bell housing and the engine when then replaced the trans... Had this happen on an old K-5 blazer. Didn't result in the fire, but with the wrong wire pinched it could.
2011 JK Rubicon 2 door, 3.5" X-Factor mid arm, 1.25" Daystar body lift, 40x13.50R17 Nitto Mud Grapplers.