Have you hot wired the fans to see if they will run ?
The issue may be upstream in the circuit.
Newer, better fans are all over the web. Google is your friend..........
Mike in Colorado
2004 Fleetwood Pace Arrow 37c,(Jezebel) Ultra RV ECM / TCM, Bilstein's, Sailun's & Sumo's all round, pushed by a 2014 Chrysler T&C.