I don't know how to do this at all but I just got this off a jeep forum so don't hold me liable if it doesn't work but here you go
"pull your panel underneath your steering colom down, 2 screws, then pull the metal panel down, 4 screws
u will notice a bundle of wires folowing down the steering colom. open up the wire loom and look for a pink/black tracer, a dk blue, a yellow, and a red these will be about 12 guage wires(thicker then the rest)
connect the pink/blk to the dk blue, this will power your ignition. then temporarily connect the red to the yellow(starter) and u will be good to go. no radio, or fan, if u need them , there are a couple other wires u will need to tap into
u should use relays to make the connections as a simple switch probably is not strong enough to work, unless u can find 30-40 amp switches
as soon as it starts, disconnect the red to the yellow, and your good to go"
http://www.jeepsunlimited.com/forums/showthread.php?362660-Anyone-know-how-to-hotwire