2011 F150 location of fan Relay? Can't find the little bugger.

Have you checked power at the blower motor connector and verified it changes depending on switch position? Have you ensured the wire connectors to the blower motor and to the resistor are in good shape? Battery junction box under the hood; 40 amp fuse F51 is for the blower relay. Look in that box and obtain a shop manual or owners guide for orientation of the fuses / relays - and what goes where. www.repairpal.com/repair-shops