I have the holley dominator ecu and I it can control the fuel pump and two fans. So I think what needs to be done is run the fuel pump wire from the ecu to the gray wire on the fuel pump relay, and run the fan wires from the ecu to the dk green/white wire for the primary fan and the gray wire for the secondary fan relays. Is this correct? If not can you point me in the right direction. Appreciate it thanks

 

You're on the right track

GM ECMs ground the fan relays and send 12v to the fuel relay to engage them

For 90-92 cars, gry is the relay output to pump wire. Dont mess with it. Dk grn/wht is call for both fuel and fan, just remember one grounds and one energizes to engage. I have no idea if the Holley system operates on the same relay concepts as GM, but Id assume so. GM seems to be the base for aftermarket esp for GM platforms

Related diagrams
http://www.austinthirdgen.org/mkport...ta_sensors.jpg
http://www.austinthirdgen.org/mkport...an_V6_vinT.jpg

I would suggest running independent fan relays instead of the factory dual fan control. Substitute the Holley fan pins instead of the LTx/LSx pins
http://i150.photobucket.com/albums/s...FanControl.gif

 

Thank you, I appreciate the reply.