BillCamino

Disassembled and cleaned the C100 connector, and used an old dental pick to snug up the female ends. Still no luck. I hooked up a set of driving lights as a temporary fix. Something interesting to note: When I was re-inserting the headlight pull into the switch, it sparked. Hmm. Makes me think it's a grounding issue..?

Ahaaa - Haven't checked that yet.. I'll give it a shot at lunch - Thanks

Took apart the 10-pin connector, it was a little corroded. Cleaned it up, checked it with my test light - there is power at 2 spots. Re-assembled, no difference: Parking lights/dash lights/tail lights all work.. no headlights. Ran a better ground - no difference next step: can of gas and a zippo?

I searched the forums, and tried everything.. no luck yet. Here's what's happening: 1989 Comanche Eliminator, 4.0, auto, short bed, converted to 4wd (using Cherokee parts!) Turn on headlight switch: I get parking lights, tail lights, and dash lights.. but no headlights. I unplugged the headlights, ran a lead from battery to lights to test them, lights are good (high and low beam). I test the headlight switch - turns out to be bad. I swap out switch, test it to make sure it's good, and turn on the lights - same issue. Parking lights/tail lights/dash lights on, no headlights. I pull the dimmer switch (off of column) and replace with a known good one (off my parts truck!) - same issue. I get Parking lights/tail lights/dash lights, but no headlights. When I pull the dimmer in, I do have bright (flash-to-pass) lights.. but no headlights when I release the switch Next steps - pull and clean the 10 pin connector behind the left headlight, and running a better ground from under the dash to the E-brake area Any idea what else I should try? Craigslist is starting to look good..