Fan Switch, By Engine Temp With Wiring (185)

Part Number: 5038

ELECTRIC FAN TEMP SENSOR
& WIRING KIT includes wire harness, engine block or intake mounted sensor,
fan relay, fuse and connectors. Temp range 190-ON 173-OFF

This kit operates on
radiator temp, if you have AC he needs 5037.  CAUTION IF USING AC SEE 5037, If switch for
radiator temp only is used it will allow heat to build up in the condenser,
then heat is transferred to radiator as water flows.  the radiator sensor will not turn fan on until
that heat is felt in radiator, letting extra heat build up in condenser so AC
system pressure can get higher and the passenger vent temperatures warmer.

Do not put over 3 amps to
it will blow. only takes 1/4 amp to trip relay 

Using thread sealant on electrical senders cou ld cause added resistance to ground which will make the gauges read lower than actual. Loctite makes an anti-seize called Graphite 50 that is electrically conductive. If you feel the temperature or oil pressure sender needs to be sealed, Loctite Graphite 50 would be an ideal choice of sealant since it will not add resistance to the sender ground.