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  headlights went out last night, need info

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Author Topic:   headlights went out last night, need info
74merc
Gearhead

Posts: 763
From: Demopolis AL
Registered: Jun 99

posted 09-10-2001 09:56 AM     Click Here to See the Profile for 74merc   Click Here to Email 74merc     Edit/Delete Message   Reply w/Quote
anyone have a wiring diagram that has the headlight switch and dimmer switch included?
anyone care to give me headlight wiring 101?

I was driving home, the headlights went out and the dash lights stayed on, it did this 3 times.
2 more times, the headlights went out, but the dash lights did too.
the engine never went out or sputtered, so I didn't lose power, the stereo was still running...
I dunno.
I cut the lights on and off and hit the dimmer switch until they came back(neither seemed to help), I couldn't recreate the problem after I got home either.

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74 Mercury Comet
302, Performer 289 intake, Holley 600, Hooker Super Comps
AOD
3:1
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7DMACH1
Gearhead

Posts: 1766
From: PHILA. PA.
Registered: Feb 2001

posted 09-10-2001 10:08 AM     Click Here to See the Profile for 7DMACH1   Click Here to Email 7DMACH1     Edit/Delete Message   Reply w/Quote
Replace the headlight switch. It has a built in breaker so when it overloads it trips the breaker and resets. Fords have always had this problem and we sell headlight switches like crazy. RAY

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RAY THE PARTS MGR. AND WISE [email protected]@ PHILLY GUY 70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG.

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AKBOSSMAN
Gearhead

Posts: 2848
From: WASILLA , AK USA M&M #743 MCA #40857
Registered: Oct 2000

posted 09-10-2001 04:46 PM     Click Here to See the Profile for AKBOSSMAN   Click Here to Email AKBOSSMAN     Edit/Delete Message   Reply w/Quote
Yea what he said ,worked on my 70 Torino GT !

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WAYNE CURTIS
70 GRABBER GREEN BOSS 302
01 Focus ZX3
03 Boss 281 (waiting on order form)
92 SHELBY 4X4 (K-9 IDITAROD LEAD DOG)
www.iditarodtrail.com
"If your under control then your not going fast enough" Parnelli Jones

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cpmaverick
Gearhead

Posts: 1602
From: Auburn, AL.
Registered: Jan 2000

posted 09-11-2001 03:47 PM     Click Here to See the Profile for cpmaverick   Click Here to Email cpmaverick     Edit/Delete Message   Reply w/Quote
Yes, especially if you have halogen headlights; they draw more amps than the OEM units and the switch can't deal with it. Newer switches are more heavy-duty (may I recommend Ford service parts?)

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74merc
Gearhead

Posts: 763
From: Demopolis AL
Registered: Jun 99

posted 09-11-2001 11:07 PM     Click Here to See the Profile for 74merc   Click Here to Email 74merc     Edit/Delete Message   Reply w/Quote
I'm gonna go play with it some more tomorrow, I think its my dimmer switch.
it only works on high beam now, the switch is hard as hell to move...
glad I don't have to drive it much lately...
I'd have a slight problem...

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tech
Journeyman

Posts: 8
From: Lodi Ca. U.S.A.
Registered: Sep 2001

posted 09-12-2001 12:59 AM     Click Here to See the Profile for tech   Click Here to Email tech     Edit/Delete Message   Reply w/Quote
I think the dimmer switch is your best bet it is a common malfuction, flip the switch several times to clean the contacts usely rust or dirt collects on the contacts or just replace it there cheap

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74merc
Gearhead

Posts: 763
From: Demopolis AL
Registered: Jun 99

posted 09-16-2001 12:43 AM     Click Here to See the Profile for 74merc   Click Here to Email 74merc     Edit/Delete Message   Reply w/Quote
I went to swap out my dimmer switch, it works now.
plugged in the working one, it dims fine. I pulled it out, plugged in the old one, it works fine...
working on stuff sucks.
I think moisture got in there, I do still have a leak, and there was one helluva storm that night...
but it never did come back on until I fought with it...

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