light dimming
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Senior User
Joined: Sep 2001
Posts: 122
Likes: 0
From: 29 palms usa
light dimming
Hello once again yall!!!!
I was wondering if the following occurance was normal. I have a 58 ford and when i turn on the headlights they dim when the engine rpm's go down and brighten when I accelerate. Is this noraml or do i have an electrical probelm. Tahnks again....
I was wondering if the following occurance was normal. I have a 58 ford and when i turn on the headlights they dim when the engine rpm's go down and brighten when I accelerate. Is this noraml or do i have an electrical probelm. Tahnks again....
Lead Driver
Joined: Oct 1999
Posts: 6,772
Likes: 550
From: Kalispell, MT
light dimming
That's normal for a generator. A lot of guys swap the generator for an alternator because they find that annoying - whatever you think you have to have, but a generator system in good repair is as dependable as an alternator.
Advantage of an gennie is that it will charge a completely dead battery. An alt needs some current to produce a charge.
Advantage of an gennie is that it will charge a completely dead battery. An alt needs some current to produce a charge.
Senior User
Joined: Jun 2002
Posts: 344
Likes: 0
From: Lancaster, So Carolina
light dimming
Excellent choice. I was having no luck keeping one wire alts running for much time b4 they failed.
I found an upsized 12v generator from the Y on another larger series truck (I think 30a), put in a fresh regulator, and have no dimming even with the halogen replacements.
I did have dimming, actual blinking of my lights from a short that kicked that breaker out on the light switch. Did the whole harness over and cured all.
I have only one concern now using a generator, that I may not be able to upgrade the ignition to a Pertronics Ignitor II (see Y Forum).
I may like original, but the power gains and efficiency of new ignition systems is undeniable.
Midnite Cruiser
I found an upsized 12v generator from the Y on another larger series truck (I think 30a), put in a fresh regulator, and have no dimming even with the halogen replacements.
I did have dimming, actual blinking of my lights from a short that kicked that breaker out on the light switch. Did the whole harness over and cured all.
I have only one concern now using a generator, that I may not be able to upgrade the ignition to a Pertronics Ignitor II (see Y Forum).
I may like original, but the power gains and efficiency of new ignition systems is undeniable.
Midnite Cruiser
Elder User
Joined: Feb 2002
Posts: 910
Likes: 4
From: Maryland
light dimming
Mine had a generator with a large pulley on it. It did the same thing with the lights dimming at idle.I had some spair generators with smaller pullys,I just put a smaller pulley on it and that fixed it.I have had very little trouble with it.I am also concerend about the electronic conversion I had bought one and havent installed it yet.I am going to try it and see what happens.
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Roger T. Pipe
1987 - 1996 F150 & Larger F-Series Trucks
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Feb 26, 2017 09:55 PM
