i got fans from the 99-02 ls1 camaro and confused about the wiring & are the ls1 camaro fans able to run @ 1/2 power?

my truck is an 04, confused on 2 relay or 3 relay? what pins on what connector at the pcm for my 04?




is this how i should wire it and if it is can the a/c be tapped at the pcm? if not show should my truck be wired up?


thanks

 

1.Yes.
2. 3 relay. I believe its still pin 42.
3. I don't recall...been awhile but I do believe so.

 

just one pin installed? i thought i need to install two? or is the second pin the one for a/c?


edit: i found instruction online and says PIN 42 on C1 & PIN 33 on C2 for 99-06 trucks so is pin 33 for the a/c controlled fans on?


Edit ll: I got the harness built its working as planed low/high, if you like to tinker its work making yours if not just order one by the time i bought fan plugs $20, relays $40, circuit breakers $10, wire loom $8, wire $8 it all adds up! I could of just ordered one online for around the same cost +/-

hoping to get it installed this week hate the long warm ups in the morning, i start it 20 minutes before i leave and still get in a cold truck for the first 3-4 miles when its cold

 

update!

harness install and working lo/hi truck warms up a lot faster now after 5 minutes in cold (30*) weather i have heat and in less then a mile truck is at 195*

i only have the 105 amp alternator but seams to be ok! when they kick on high the volt gauge drops a little then gos back to 14v where it normally is pretty quick and that with the lights and heater fan on high, I was able to put the relays under the fuse box cover for a clean install with every thing wire loomed look factory

my 4.8 seams to like not having fan clutch setup truck feels a little more responsive and has a touch more pep by the butt dyno.