seems like someone 'rewired' your rig. you have 24 hours to bring it back and make them fix it...legally...then you're on your own.
however, this is not a hard fix, nor will it be expensive...given you have a junk yard available.
remove the wire harness from the interior and replace with new unit...that simple
now, removing the dash, door pannels, headliner, radio, console, seats, carpets, and cutting all the tape that's under there....that will be the hard part.
seriously, check the key ignition switch. it could be going bad.
1994 jeep cherokee, xj, 3" rough country springs / bilstein 5100's, 31" tires with trimmed fenders, aussie locked front diff, herculined ext, hella FF75 driving lights on factory fog location
[COLOR="Lime"]soon to be[/COLOR] 4.11 gear and and a ford 8.8 LSD rear and herc'd interior