Quote:
Originally Posted by Johntom
I have a 2001 7.3 Crew Cab and after running it for a little the lights all seem to have a surge to them (brighter then dimmer) it is pretty noticeable at night. I shut the engine off, but turned the lights on and they stayed steady. as soon as i started the truck back up, the lights were doing it again. the alternator and batteries are good, any other ideas?
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What was your reading for the charging system? Almost sounds like a bad voltage regulator. They're internal inside the alt.