I see wearing the fans themselves out being a problem.....I used falcon fans with the shroud and most people think there OEM for the 34 they fit that neat....i tapped into the sender signal wire under the dash and made a control unit that has adjustable hysteresis and trigger point so no need to add sender's or switch's.Its all mounted inside the cabin next to all the diagnosis/4WD bleed connector terminal for service/adjustment time...the control unit is about the size of a matchbox so its compact.....i also wired them into the original fuse box under the bonnet and used the fuse thats marked "FAN" which is for the a/c fan so when your fan stops....logically you check the fan fuse.....the relay box also has extra relay holes that are empty so i got a genuine relay block and relay and fitted them in there also...might want to consider looking at doing it this way