Buck
5,000+ posts
little alien on campus
I have a 300 amp Excessive Amperage alt with an external voltage regulator. This alt puts out really good power, but for some reason my headlights pulsate (all lights, even interior). I've had the external voltage regulator replaced and it still does it. The regulator is wired up with 8 gauge and a 30 amp relay that turns on with ignition. Do you have any suggestions? What causes this? I just cannot pinpoint wtf the problem is besides the alt being messed up or off a little. Doesn't matter what voltage I'm charging, it does it.
