LS Alternator wiring help

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OldBlue82

OldBlue82

Greasemonkey
Mar 13, 2008
248
18
Huron County, ON Canada
Trying to figure out how to wire my alternator for may Lq9 swap. The alternator is out of a 2004 Escalade, and has a 4 pin plug. There are only 3 wires going into the plug from the stock harness so 1 pin is not used. My stock wiring harness from an 87 ss monte only has 1 wire plug going to the alternator. Ive heard I have to connect my factory wire to 1 of the pins on the ls truck alternator for it to work properly. I also heard I have to wire a resistor into this 12v switched wire or the alternator could burn up.
this is a carbed Ls setup. If anyone could clear this up for me it would be appreciated!

 
pontiacgp

pontiacgp

blank
Mar 31, 2006
27,719
113
Kitchener, Ontario


on the 12 volt switched a 500 ohm, 1/2 watt resistor should be wired between the alternator and the brown wire
 
jacobdavis1979

jacobdavis1979

G-Body Guru
Feb 18, 2011
700
18
Hey man im not sure someone correct me if im wrong but i think if you get the tahoe alternator it bolts on the same has the same pulley on the front and i think its just a 2 wire setup with your main power wire to the battery and use the factory tan wire that led to your delco alternator.

Try this video https://www.youtube.com/watch?v=RLaRLiqmDW0

I plan on doing this swap soon so ive been doing alot of research lol

Can i see some pics of your build?
 
OldBlue82

OldBlue82

Greasemonkey
Mar 13, 2008
248
18
Huron County, ON Canada
Thank you pontiacgp, thats what i needed to know. Didnt want to switch alternators since I already have this one and it works fine.

jacobdavis1979 said:
Hey man im not sure someone correct me if im wrong but i think if you get the tahoe alternator it bolts on the same has the same pulley on the front and i think its just a 2 wire setup with your main power wire to the battery and use the factory tan wire that led to your delco alternator.

Try this video https://www.youtube.com/watch?v=RLaRLiqmDW0

I plan on doing this swap soon so ive been doing alot of research lol

Can i see some pics of your build?
thanks build thread is here viewtopic.php?f=5&t=22421&start=195#.U5yAESgjU4M

hope it helps you out
 
jacobdavis1979

jacobdavis1979

G-Body Guru
Feb 18, 2011
700
18
Dude!!! Nice work man! Im gettin ready to do the swap myself i just aint got the motor yet and im really nervous about it lol
 
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