OK guys, I am not quite sure why this is happening so here goes.

I have an 88 Iroc that originally was a 305TPI 5spd.

I swapped in a 350, and a 350 prom from an 87 350 car.

I added a 180 stat, the fans run but seem to be sporadic.

They run as soon as you start the car, sometimes its the Drivers Side, sometimes its the Pass. Side. What is baffling is that if you unplug the drivers Side, the Pass. Side kicks on. They both dont come on when the AC is on like they should. So, needless to say both fans work, just not when they are supposed to.

So... Where to start? Wiring issues? Relay Issues?

Ive never really done any electrical tracing, so I'm not really sure where to start. I would like to get the system working correctly, but possibly also wire it up to a switch so I can fire them on at will too.

Thanks in advance for your help guys.