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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Lights

Old Mar 28, 2009 | 03:26 PM
  #1  
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From: Henderson,Nv
Lights

Hey when i drive with the headlights on the headlights get brighter when i give it gas and go dim when i dont give it gas does anybody know what might be the problem ?
 
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Old Mar 28, 2009 | 04:23 PM
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Sounds like the voltage regulator is shot.

Check the voltage out of the alternator at difference rpms.
 
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Old Mar 28, 2009 | 06:43 PM
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Idle speed could also be low.

The faster the RPMs of the engine, the faster the Altenator turns.
 
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Old Mar 29, 2009 | 01:31 AM
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Every carbed vehicle I've ever owned has done that. I never figured out how to fix it, but I know it can be done. I took my 79 Capri in for an electrical problem and when I got it back, the lights didn't go dim anymore. I've already replaced the voltage regulator on my truck, but I guess thats not the problem with mine.
 
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Old Mar 29, 2009 | 02:33 AM
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I have had luck eliminating that problem before by cleaning the battery connections, solinoid connections, and making sure all the ground connections are good and clean. I have also heard this will happen when your battery gets older and weaker.
 
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Old Mar 29, 2009 | 07:57 AM
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It looks like the solinod has touch the side wall the hot wire looks a little fried.Going to replace today maybe this will fix the problem.Thanks for all the help.
 
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