by rustytoolss Tue Mar 04, 2014 9:48 amHow do you wire a fan relay SO that it will run when the ignition switch is turned off ? Then shut off once the temp is lower .
2 posters
Fan Relay wiring
rustytoolss- Number of posts : 624
Location : Clinton, Ohio
Age : 67
Registration date : 2013-07-19
dodge man- Number of posts : 2036
Location : ohio
Registration date : 2012-08-08
you will need to pick up 12 volts that's hot when the keys on or off, maybe go to the battery and be sure its fused, take that wire to the relay, and another wire off the relay to the fan and make sure the fan is grounded, I would use a adjustable relay so you can adjust how long you want it to run, there will be another wire from the relay to a temp sending unit that will mount in your intake manifold, or buy one that slips into your radiator hose,
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