Just wanted to bump this for any new thoughts. I have found a ton of wire diagrams, but nothing related to the fan relays or trigger wires. What I did figure out is there are two relays per fan because they are two speed fans. I guess that should have been obvious. I also found that if sub fan 2 relay is powered, it puts power to the sub fan 1 relay. I have a feeling it is just back feeding though.
It would be a huge help if I could just figure out when the fans should operate. Are they both suppose to turn on together? At what point do they switch to high speed? A/C has been deleted (not by me) on the car. I tried putting the relay and fuse back in. The a/c button and blower motor work, but that it. It will not turn on either fan.
The driveside fan will turn on and off by the computer. I am considering jumping the relay trigger wires from the main fan relays to the sub fan relays. Anyone see anything bad coming for that?