73 headlight question

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Jan 23, 2007 | 06:01 PM

tonyro

Thread Starter

Racer

Joined: Jan 2006

Posts: 304

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From: Plymouth Meeting PA

73 headlight question

I have a question about my headlights. When the lights pop up the low beams are one but when they snap into place, the passenger side goes out. The bulbs all work on high beam. Does anyone have any idea what the problem could be?
Thanks
Tony

Jan 23, 2007 | 06:24 PM

marshrat99

Melting Slicks

Joined: Aug 2003

Posts: 2,135

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From: Dayton Oh

Using the process of elimination, I'd say it is not a vacuum issue. That would leave us with an electrical issue. I'd start with a fresh bulb. If that doesn't do the trick, then check to see if the bulb contacts of the socket are free of corrosion. Next it check the electrical connections closest to the light. Most probably a loose ground or something simple like that. Almost forgot that you could have a broken wire that is making contact while light is rising but gets pulled apart just at the time the light is at its highest.

Last edited by marshrat99; Jan 23, 2007 at 06:26 PM.

Jan 23, 2007 | 07:24 PM

Durango_Boy

Team Owner

Joined: Aug 2006

Posts: 24,125

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From: Columbia Missouri

Sounds like a wire is snagged and the socket is being pulled away as the light assembly opens...breaking contact. It's definitely going to be something wrong with the wiring.

Jan 23, 2007 | 08:02 PM

Green73

Racer

Joined: Oct 2006

Posts: 473

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From: New Port Richey FL

With the lights still up... turn the lights off and then on again (pull down the vacuum override to keep them up if you have to). If the bulb comes on, then I'd say its a bad bulb. If it does nothing then I'd inspect some of the wires.

Jan 23, 2007 | 08:02 PM

Paul71LT1

Pro

Joined: Jul 2004

Posts: 711

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From: Waterford CT

I had an issue with the fiber optic on one side and upon close inspection found that the cable bundle to the right side head light bucket was being pinched between the hard stops when the light locked open. I used a twist tie to pull it slightly to one side and eliminated the problem. Make sure you don't have a wire being pinched here.