When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It varies depending on the demand on the alternator. The regulator looks at the truck's voltage level, and then sends a varying voltage to the field of the alt to vary the output to keep the system voltage level. So it could be anywhere from a couple of volts to 12 volts.
08-05-2004, 01:02 PM
