all lights pulsating

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Jul 10, 2007 | 05:29 PM

tkoppab

Thread Starter

Joined: Aug 2004

Posts: 32

From:

all lights pulsating

Hi i have a 66 coupe, and i have a bit of a problem, and have no idea why its happening. when i turn on the lights at night, for some reason my lights start to pulsate, and i mean all of the lights, console, interior, headlights, its freaking weird, but this only happens when the car is on, once i turn the car off, the pulsating stops. I have a feeling its a missed connection or maybe something touching something, or something needs a ground. Appreciate the help.

JOrge

Jul 10, 2007 | 05:31 PM

Derf00

Gentleman's Relish

Joined: Feb 2005

Posts: 13,187

From: AZ

RE: all lights pulsating

Quote:

ORIGINAL: tkoppab

Hi i have a 66 coupe, and i have a bit of a problem, and have no idea why its happening. when i turn on the lights at night, for some reason my lights start to pulsate, and i mean all of the lights, console, interior, headlights, its freaking weird, but this only happens when the car is on, once i turn the car off, the pulsating stops. I have a feeling its a missed connection or maybe something touching something, or something needs a ground. Appreciate the help.

JOrge

bad diode in the alternator. Diode is a directional flow gate, if those start to go you will get a pulsing like what you're describing. Get a kit and either replace the diode set or get a new alternator.

Jul 10, 2007 | 06:04 PM

LCC

4th Gear Member

Joined: Oct 2006

Posts: 1,443

From: Canada

RE: all lights pulsating

Replace the voltage regulator......

Jul 10, 2007 | 06:09 PM

Derf00

Gentleman's Relish

Joined: Feb 2005

Posts: 13,187

From: AZ

RE: all lights pulsating

Yeah, forgot about those on the older alternators (being external).

You could also get a cheap voltage regulator and check the volrage on the back side of the alternator it should be constant. If it's a moving target then the regulator is a likelly canidate.