A/C condenser fan relay 90SS454
 

I have a Holley Sniper EFI. I am wanting it to turn on my electric fan. Looking for the relay. Im trying to trace down the wiring for the front cooling fan sometimes called a condenser fan. The wire looks like its black/red stripe. I followed it up towards the firewall and then lost it in the massive cluster of wires. Where do I find the relay to run the condenser fan?
Thanks Scott