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Author
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Topic: Headlight switch?
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MrXerox
Gearhead Posts: 348
From: Oklahoma City, Oklahoma
Registered: Nov 2000
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posted 07-27-2001 10:34 PM
   
I was cruzing on the highway last night breaking the new motor in on my 71 when all the sudden the dash and headlights started flickering and then went out. The car still runs so I pulled the hazzards and they worked so I limped her home. It has a brand new alt on it and I am wondering if this could be headlight switch related? How do I test the switch?
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 07-27-2001 11:33 PM
The switch is harder to test than it is to replace and fairly cheap, but before replacing it you might wanna cycle the dimmer switch a few times to see if the lights flash or come on, many times a dimmer switch will die. If you have aftermarket high power headlights a relay system will keep this from happening again. I like using two, one for high, and one for low and wire them so the low beams stay on when the high beams are on. Hope this aint too much info  .
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sigtauenus
Gearhead Posts: 2205
From: in the RV, moving soon from SC to VA
Registered: Jun 2000
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posted 07-28-2001 06:51 PM
Doc, I have a good wiring diagram for putting in relays, but don't think it is set-up for keeping the lows on while the highs are on. Got a good diagram you can post? I am planning on taking my time putting it in, don't want to screw anything up that is working fine now, and when I do put it in, I don't want anybody to know its there.I think headlight switches go for about 10 or 12 bucks, and the dimmer switch is about 4 or 5 bucks at most places like Autozone.
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 07-28-2001 08:11 PM
I aint good at recording the things I do  . I wire the low beams direct to the relay and run the brights through the dimmer to the relay so it just adds the brights. You could do it with one relay but I did it as an after thought and used two rather than figure it out. I also added heavier wire to the headlights from the relay so I could use the lights full potential. I'm old "I need light"  !
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SteveLaRiviere
Administrator Posts: 42859
From: Saco, Maine
Registered: May 99
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posted 07-28-2001 08:25 PM
And Doc said: "Let there be light!"And there was light! ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 07-30-2001 04:00 PM
And the police said "pull over boy, that's too much light" !
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