Flashing headlights???
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Senior User
Joined: Oct 2004
Posts: 262
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From: Northern Virginia
Flashing headlights???
I have recently had a problem with my headlights cutting on and off.Since it is an intermittant problem its had been tough to chase down.In my manual it says there is a circuit breaker in the headlight switch.I have jiggled the wires to the lights and the switch when they cut off but it doesn't seem to matter.The cut off for a few seconds and then come back on.Any ideas??
Joe
Joe
Posting Guru
Joined: Nov 2004
Posts: 1,111
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From: Turlock CA
I would look for a short. I didn't know about a circuit breaker.
Have you made any upgrades to like a H4 headlight or are they stock?
I upgraded to H4's and added relays up near the battery and I love the way they are brite at all times even at stop lights. The old wires are not rated for new headlights and cause them to dimm, I learned that here at FTE...
Have you made any upgrades to like a H4 headlight or are they stock?
I upgraded to H4's and added relays up near the battery and I love the way they are brite at all times even at stop lights. The old wires are not rated for new headlights and cause them to dimm, I learned that here at FTE...
Lead Driver
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
Couple of suggestion, before considering replacing switch, suggest checking headlight gound wire to frame are clean and secure at frame/body. Some time back took wire wheel to ground connections, connectors and otherwise, followed up with dielectric grease and have not experience problems since. Found poor ground tends to be lot of my problems with electrical circuits. Had a problem where lights would cut out occasionally, kinda exciting when it happened, found poor connection at the high/low beam connection, if recall eventually replaced. Also removed the light switch lever and cleaned it up, not sure if had any effect, but only took minute or two.
dave
dave
Last edited by daveengelson; Sep 16, 2006 at 10:36 AM.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
To add to Dave, check around the dimmer switch for corrosion and dirt too.
When you have done all of those things, the Whiter Lights upgrade by Steve DeLanty can help too. There is a how to in the tech articles on this site.
good luck
John
When you have done all of those things, the Whiter Lights upgrade by Steve DeLanty can help too. There is a how to in the tech articles on this site.
good luck
John
Thread Starter
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Senior User
Joined: Oct 2004
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From: Northern Virginia
Thanx for the replies.I think I may go with an isolation relay set up of sorts when I start on the body work.I assumed it had one but I guess not.I'm going to look into the dimmer switch and grounds and see if I see anything out of place.It was pretty exiting the other night when they went on the blink on a gravel road out in the country!
Joe
Joe
Cargo Master
Joined: Sep 2005
Posts: 2,954
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The old headlight switchs are borderline for halogen lights, I've had alot of problems with my Mustangs, but the aftermarket switches fixes the problem. Some of the guys at stangnet were wiring in a relay to run the lights, but I found just replacing the switch worked on all of mine sofar.
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Postmaster
Joined: Dec 1999
Posts: 2,813
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From: Connecticut
Those old switches were noted for the internal breaker going bad. Yes, a bad ground can cause it, but 9 times out of 10, it's the switch. Clean up all your grounds for the lights and dimmer switch (good preventive maintinance) and see. I'll bet it's the switch.
Barry
Barry
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