Author Topic: Headlights dim and pulse - 68  (Read 110 times)

Offline 68 GT

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Headlights dim and pulse - 68
« on: November 18, 2024, 03:54:19 PM »
The headlights on my 68 coupe are not very bright and they kinda pulse brighter to dimmer while driving at night. I believe they do this no matter if I have them dimmed or not dimmed with my dimmer push button foot switch. I believe my blower motor also speeds up and slows down a bit when I have the blower on high. Has anyone else experienced these problems? What headlights are people using in their 68 Mustangs?

Thank you for any advice and guidance.
« Last Edit: November 18, 2024, 05:17:09 PM by J_Speegle »
VIN 7T01C246XXX
Actual build date 5-11-67

VIN 8F01J208XXX
Actual build date 6-27-68

Offline ruppstang

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Headlights dim and pulse - 68
« Reply #1 on: November 18, 2024, 04:36:51 PM »
It sounds like a voltage regulator problem. The originals used points, and they could cause the pulsing. New ones are solid state and are less problematic. To keep the original appearance, you can move the old cap to the new one.
On a driven car I have used Halogen headlights. If you use them, it is best to replace the headlight switch as they draw more current.
« Last Edit: November 18, 2024, 05:17:24 PM by J_Speegle »

Offline midlife

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Re: Headlights dim and pulse - 68
« Reply #2 on: November 18, 2024, 09:12:15 PM »
It sounds like a voltage regulator problem. The originals used points, and they could cause the pulsing. New ones are solid state and are less problematic. To keep the original appearance, you can move the old cap to the new one.
On a driven car I have used Halogen headlights. If you use them, it is best to replace the headlight switch as they draw more current.
If using halogen headlights, best to run them off a relay system, as any of the stock headlight switches can't handle the power that halogen lamps draw.  Lots of kits out there for headlight relays.
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