What pin to use for fans

[Rat Chevelle]

Hello, I am trying to find out what pin to use in order to control electric fans with the ECM on my 69 C-10 with a 4.8.
I am using a 411 ECM out of a 2002 silverado 4.8.
The harness is out of an 02 6.0.
I can see the controls for turning the fans on (they are currently disabled) but I do not know which pin the signal is going to come out of.
the harness did not have any pins for this obviously since it had a belt driven clutch fan.
BTW, I did use the "search" feature but found nothing -which would not surprise my wife as she says I wouldn't find my nose if it were not attached
So any help on this matter would be greatly appreciated.
Thanks in advance for any info or replies.

Greeting from the suffocating heat of the Sonora Desert.
Rat Chevelle

[RACINGVORTEC5.3]

you can see which pins to use here http://www.lt1swap.com/2004vortec_pcm.htm

[RACINGVORTEC5.3]

IM sorry I thought 04 this is for 02 http://www.lt1swap.com/99-02_vortec_pcm.htm

[RACINGVORTEC5.3]

IM sorry I thought 04 this is for 02 http://www.lt1swap.com/99-02_vortec_pcm.htm

FRom San luis Sonora Also Sonorense