Headlights

JAY SHIRLEY

MEMBER
2003 FORD F-150
V8
4WD
AUTOMATIC
200,000 MILES

My head lights dont work all other lights do if you pull back on dimmer switch they light up but when you let go they quit

Thursday, December 9th, 2010 AT 6:37 PM

3 Replies

JDL

MECHANIC
16,098 POSTS

Sounds like a problem with the dimmer switch?

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Wednesday, March 31st, 2021 AT 7:13 PM

JAY SHIRLEY

MEMBER
2 POSTS

Thats what I thought so I put a new multifunction switch on yesterday and the lights came on so I shut them off and went out last night and when I went to turn them on they didnt work

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Wednesday, March 31st, 2021 AT 7:13 PM

JDL

MECHANIC
16,098 POSTS

In the diagram, fuse 3--30 amp should be hot all the time, use voltage tester on the fuse circuit. The red wire with yellow tracer carries voltage from the fuse to the multifunction switch. From the multifunction switch, also a red wire with yellow tracer carries voltage for headlamps. You may be able to get under your dash and find those two wires coming and going from the steering column, check for voltage. Did you check headlamp connector for voltage and ground?

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