Fan control

The fan motors had pigtails on them but had round connectors so those were cut off and new ones put on to fit into a 6-pin plug.  The center two wires are the primary fan (center single fan) and the outer two pairs of wires are for the two secondary fan motors.  These fans draw 6amps and will be fed from two relays.  The power to the three fans motors will run through three fuses in the event that one of the primary fans fail, that will not effect the other fan on that relay. 

Here's the new harness. There are the wires going to the fuse bank for the three (+) leads to the motors, a ground and the wire to activate the relays by the ignition switch "on" position.  The loom is open because there are some wires are missing that will be added to over ride the two temperature sensors in the radiator to have control inside the truck to turn the fans on at any time if desired as long as the ignition switch is in the "on" position. 

The relays are new but the connectors for them are not.  Finding the male end for the relays is easy if you have an old C/S wiring harness to cannibalize but if you don't just find a DSM in a junkyard and cut out part of the relay box and the same connectors were molded into that box.  You just have to cut them free and the side locking tabs are there.