I have the same issue with my 1994 Cherokee. My headlamps stopped working, then I was monkeying trying to get the headlamp switch out and then noticed the head lamps were working again, but the running lamps were not working. When the headlamps were not working, the front turnsignals were not working.
I then replaced the headlamp switch and then noticed what you describe as the "sweet spot" on the switch where the running lights work, but when I move the switch to the headlamp on position, the running lamps turn off.
Looked at the shop manual and found that the headlamp switch runs through the buzzer for the 93-95 cherokees. They changed this pretty quickly Chrysler must have noticed the weakness in this system - a failure mode that your headlamps don't work is quite severe in my experience in the automotive industry. I unplugged the "Combination Buzzer" and still had the same issue.
My next steps are to replace the combination buzzer and then start replacing the 1/2 ISO relays (the smaller ones) on the relay module. I will post the wiring schematic from my shop manual in the next few days.
Did you find a solution to this?
Tuesday, July 15th, 2008 AT 5:20 PM