As I look at doing the E-fan conversion, I'm trying to find another way to activate them when the A/C is on besides using the clutch hot wire. The thought is that when in town and the airflow needs to be helped by the fans they run. When running on the highway, when there is plenty of air, they don't. Maybe a temp sensor on the condenser or a pressure switch?

 

On my setup I dont have my e-fans wired into the A/C they only turn on when it reaches the set temperature, but I dont have really the full cold A/C until it reaches operating temps or while driving. Works for me though.