[Stocker]

Originally Posted by lil hoodlum

I am running the stock type headlight and dimmer switch in my 68 C10 daily driver for 24 years now. They work as they should but sometimes it seems as if my headlights "pulse" at night while idling. It is a little annoying and have been considering doing the relay upgrade because I have had to replace the headlight switch a few times. I do have a aftermarket wiring harness installed and all of the necessary grounds. I am still running the factory 65 Amp alternator too.

I'm not at all sure but I think that an upgraded internally regulated alternator might fix that low rpm 'pulsing'.