nice 1, i know it may sound over kill but is it worth having a relay per fan?
-----------------------YES ----I USED TO RUN KENLOWS WHEN FIRST USED IN MOTORSPORT AND RELAYED EVERY THING!!!!!!!!!!!!!!!!!TWIN FANS TWIN RELAYS -GO FOR IT-------
MOTOR MANUFACTURETRS DONT USE THAT MANY, SIMPLY TO DO WITH COST .
JUST TRIGGERS REALLY-------------------