The setup is Flex-o-lite 210 fan, fans wired together, and a VSC controller. Works good. no problems. Need your opinion for a little mod. I was thinking of. The fans are running (as they're supposed to) with the A/C on,all the time. including on the interstate. The question - If i put a switch in the signal wire after the high side pressure switch, but before the controller, so I could turn off the fans to the A/C side only from inside the cab upon entering the interstate, because I would moving at speed (60+ mph.), the fans wouldn't be needed at all. But, having them running for the A/C, would put an unnessary drag on the alt. reduciing mpg. a little.