Headlight Confusion!!!
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Headlight Confusion!!!
My 1995 F350 headlights are out of the blue impaired, they dont come on at all. I had been running 10,000K HID's for over a year, and now they dont work. So the first thing I tried was just replacing the bulbs with halogen ones, and they didnt work. So I checked the fuse the headlights are on and sure enough its fine, so my last thing i could possibly think it could be other than a burnt wire in the harness, was the headlight swtich in the cab. So I pulled the entire dash bezel off, and removed the switch and replaced it with a new one, and after all that....NOTHING! What else could it be...? Could the HID's fried a wire somewhere in the harness!? I just dont understand
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Joined: Jan 2001
Posts: 56,992
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From: Virginia
It could be the dimmer switch in the column. Ford calls this the multifunction switch.
If you want to do some testing, get a testlight, and pull the headlight switch back out. You should have voltage on the black orange wire coming into the switch. Keep the harness plugged in, and when you activate the headlight switch, you should have voltage on the red/yellow wire.
From there the red/yellow goes to the column to the multi-function switch. If your little blue highbeam light in the dash does not work, then I would suspect the multifunction switch being bad. The red/yellow goes into the switch, and comes out on a lightgreen/black for the high beams, and a red/black for the lowbeams.
If you want to do some testing, get a testlight, and pull the headlight switch back out. You should have voltage on the black orange wire coming into the switch. Keep the harness plugged in, and when you activate the headlight switch, you should have voltage on the red/yellow wire.
From there the red/yellow goes to the column to the multi-function switch. If your little blue highbeam light in the dash does not work, then I would suspect the multifunction switch being bad. The red/yellow goes into the switch, and comes out on a lightgreen/black for the high beams, and a red/black for the lowbeams.
