The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Help!! My alternator is killing my battery.

micscottj · 12-07-2004, 12:02 AM

i have installed a 120 amp high output alternator on my 74 chevy truck. now my battery is being drained by the alternator when the truck is not running. otherwise it charges fine. I ran the red wires on the alt plug back to the battery wire like someone told me. i suspect that is the problem. if i unplug the alt it does not kill the battery.

12-07-2004, 12:02 AM	#1
micscottj Registered User Join Date: Nov 2004 Location: Memphis, TN Posts: 12	Help!! My alternator is killing my battery. i have installed a 120 amp high output alternator on my 74 chevy truck. now my battery is being drained by the alternator when the truck is not running. otherwise it charges fine. I ran the red wires on the alt plug back to the battery wire like someone told me. i suspect that is the problem. if i unplug the alt it does not kill the battery.