Headlights

Tiny
USMILLERS
  • MEMBER
  • 1973 FORD F-350
  • 180,000 MILES
Hi, we are having probelms with the headlight staying on. They come on & off with the switch, but then the relay seems to be kicking it off. We ahve replaced the switch, fuse, headlights, cant find the problem. Thanks :)
Wednesday, October 5th, 2011 AT 12:59 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Do you have a floor mount high beam switch? Have you replaced that switch?
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Wednesday, October 5th, 2011 AT 1:03 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
The connecter on the dimmer switch melts and causes a bad connection. You may have to replace the switch also.
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Wednesday, October 5th, 2011 AT 1:13 AM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
YOUR FLOOR DIMMER IS JUST LIKE A JEEP CJ

FLASHING HEADLIGHTS IS DEFINITELY THE SYMPTOMS OF THE DIMMER HAVING PROBLEMS

IT'S REALLY BAD IF THEY GO OUT, AT NIGHT, MILES FROM HOME, AND YOU ARE IGNORANT TO WHAT'S HAPPENED. SO YOU DRIVE REALLY SLOW, TO LIMP IT HOME. THE HIGHWAY PATROLMAN, PULLS YOU OVER AS YOU PASS A CONVENIENCE STORE. HE JUST DON'T UNDERSTAND THE SEVERITY OF "YOUR PARTICULAR DILEMMA". AND YOU GET A WARNING, "NO DRIVEY WITHOUT LIGHTS IN THE FRONT". THEN THE SAME FELLER GIVES YOU TICKET FOR THE 2 FLASHLIGHTS TAPED TO THE BUMPER, ABOUT AN HOUR LATER! (DON'T EVEN ASK!)

SINCE THIS INCIDENT, I HAVE SEEN IT MANY MORE TIMES. NORMALLY BOTH THE PIGTAIL AND THE DIMMER ARE RUINED FROM THE HEAT, WASTING YOUR TIME TRYING TO SALVAGE EITHER---USE DIELECTRIC GREASE ON THE NEW CONNECTORS! ABOUT $7 FOR A TUBE AT THE AUTO STORE

IN THE PICS, THIS IS A NEW PIGTAIL, THE CONNECTORS ARE ALL THE WAY FORWARD

WHAT USUALLY HAPPENS IS THE CONTACTS INSIDE THE CONNECTOR GET SHOVED REARWARD AND REALLY DO NOT CONNECT ANY MORE, THE JUST "TOUCH". THIS IS WHERE THE HEAT STARTS GENERATING. THEN "MELTAGE" OCCURS---THEN IT IS IMPOSSIBLE TO CONNECT

YOU THINK YOU HAVE IT SHOVED TOGETHER, REALLY YOU ARE SHOVING THE OTHER CONNECTORS REARWARD TOO, THE MELTED PLASTIC CAN NO LONGER HOLD THEM IN PLACE!

THE MEDIC
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Wednesday, October 5th, 2011 AT 2:15 AM

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