Dimming headlights
#1
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Dimming headlights
When I step on the brake in my 88 SE, the headlights and panel lights dim a bit. On releasing the brake, they come back up to full strength. The voltmeter dips a volt when this happens. The rest of the car is fine, no other electrical problems of any kind. Normal for these cars?
#2
Former Moderator. RIP Icemark.
No, not normal.
What voltage is the car idleing at?
It should be around 13.5 to 14.4. You may want to read it with a digital multi-meter to make sure as the factory gauge is only <.5 accurate.
If it is below that the alt is starting to fail or you have bad grounds to the engine or battery.
If the charging circuit (read alternator) is operating correctly then there should not be any sustaned dip using any accessory or brake lights.
What voltage is the car idleing at?
It should be around 13.5 to 14.4. You may want to read it with a digital multi-meter to make sure as the factory gauge is only <.5 accurate.
If it is below that the alt is starting to fail or you have bad grounds to the engine or battery.
If the charging circuit (read alternator) is operating correctly then there should not be any sustaned dip using any accessory or brake lights.
#3
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Re: Dimming headlights
Originally posted by nopistons
When I step on the brake in my 88 SE, the headlights and panel lights dim a bit. On releasing the brake, they come back up to full strength. The voltmeter dips a volt when this happens. The rest of the car is fine, no other electrical problems of any kind. Normal for these cars?
When I step on the brake in my 88 SE, the headlights and panel lights dim a bit. On releasing the brake, they come back up to full strength. The voltmeter dips a volt when this happens. The rest of the car is fine, no other electrical problems of any kind. Normal for these cars?
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