I have a transmission cooler mounted under the car between two frame rails. I am concerned that it does not get enough air flow over it during slow traffic situations and would like to had a small electric fan. I have found plenty of fans that will fit nicely, but not sure how to include a thermostat to turn them on when needed. I could tie it into my engine fan control, but not sure that is the best way. Looking for ideas or products.

thanks

Pat