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Home » Public Forums » GMCnet » Head light / Alternator Issue Sylvania High performance seald beams. (Need direction from electrician types)
Head light / Alternator Issue Sylvania High performance seald beams. [message #116346] Thu, 24 February 2011 10:58 Go to previous message
gbarrow2 is currently offline  gbarrow2   United States
Messages: 765
Registered: February 2004
Location: Lake Almanor, Ca./ Red Bl...
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Senior Member
I recently noticed that my headlights dim and then re-brighten (is that a word?) frequently while driving at night.

Last night I noticed that when the lights dim the alternator/amp meter goes negative. It only lasts for a few seconds and then the ampmeter switches back to positive and the lights come back up.

Any suggestions as to finding the cause of this and repairing it?

I have never been happy with the light from the stock headlights but have not wanted to install one of the upgrade kits that have been discussed on this forum.

Last week I bought some Sylvania High Performance Lighting sealed beams ($19 and change each at O'Reilly's) They made a huge difference. I guess the bulb technology has changed a bit. No need to change anything else with these bulbs.

The fluctuating brightness issue existed before and after I changed the bulbs so that's not the cause.

I have never noticied the ampmeter fluctuating when driving without the lights.

I'm not having battery or charging problems yet. The engine battery is about 6 months old and the house 6v batteries are only 2 years old.

I did not notice the alt light come on when the ampmeter went negative but I did not specifically look at the light.

All suggestions will be appreciated.




Gene Barrow
Lake Almanor, Ca.
1976 Palm Beach
 
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