LS2 Alternator wiring help
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Teching In
Joined: Mar 2010
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LS2 Alternator wiring help hey guys, i'm working on a 67 chevy Pickup, has an LS1/4L60E combo, i recently installed a PAINLESS engine/trans harness and Painless Truck harness. having troubles with the wiring for the alternator. the guy installed a 2005 LS2 GTO alternator on the LS1, why he did this i dont know. anyways. i've wired up the entire truck and everything circuit is working correctly but battery drains after a couple days. disconnected alternator and battery is fine.
i wired the alternator as follows, battery to starter: starter to lug on alternator. on the 2 wire connector, 1 wire is jumped to alternator lug and other wire tied into 12v activation wire from painless truck harness. the way i have it wired the truck works perfect, charges at 14.2v while idling except the battery drain part.
Question is did i wire the connector wrong and thats whats causing it. Do i have to wire the resistor into the wire like i've been reading about or no?
PLEASE HELP!!
Thank you in advance
i wired the alternator as follows, battery to starter: starter to lug on alternator. on the 2 wire connector, 1 wire is jumped to alternator lug and other wire tied into 12v activation wire from painless truck harness. the way i have it wired the truck works perfect, charges at 14.2v while idling except the battery drain part.
Question is did i wire the connector wrong and thats whats causing it. Do i have to wire the resistor into the wire like i've been reading about or no?
PLEASE HELP!!
Thank you in advance
I was thinking perhaps yours only requires two wires (main lug + field), and no jumper from the 2-wire plug to the main lug. My alternator (LS7 corvette) is 'supposed' to use three of the four terminals on the weather pack plug, and I actually just need the one shown--no power drain and charges @ 14.7 volts. Perhaps your might be the same way?
You can research this as I am not an expert, but I do believe you will need to install a 1/2 watt 470 ohm resistor in line on the 12v activation (trigger) wire, or your alternator may not live long.
