I have a 96 xj style w/ inline6, so my wiring should be similar/same as yours. The brake lights, hazard, turn signal, and back up lights are fused on completely different circuits than the headlights and external parking lights - the parking lights have a fuse, and the headlights have a circuit breaker and a fusible link. When the fuse blows, the brakelights still work, so I'm assuming that the hazard, turn signal, etc. Also still work.(The turn signals and back ups should be "hot" in the Run and Acc key positions) Do your headlights still work after fuse blows? If so, this isolates the problem just to the parking light circuit. If Not, then the headlight switch is most likely the source of the problem.
OK, the possibilities are:
1. The part of the headlight switch that carries the power to the parking lights is shorted internally, blows fuse - Replace switch.
2. There is a short in one of the wires going to a parking light. To check, you'll have to remove the lens cover and light housing/assembly on each light that doesn't work when fuse blows and check the wires for breaks, moisture providing a path to ground, etc. Do this one at a time with each light until you find "the problem".
3. If you've had an accumulation of moisture in your floorboard(s), under body trim in door frame at bottom of door opening, you might have a bad connection that water touches and provides the perfect medium for a path to ground on the frame.
Hope this helps. Good Luck!
Saturday, August 25th, 2007 AT 6:39 AM