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Old 05-24-2010, 07:25 PM   #10 (permalink)
I have to start over?
Join Date: May 2010
Posts: 214

Big inefficient truck - '94 Dodge Ram 2500
90 day: 12.1 mpg (US)

Honda Civic - '84 Honda Civic DX Hatchback
Thanks: 2
Thanked 8 Times in 7 Posts
Over the weekend I went to the car graveyard and picked up some new toys. That is, some relays, a seat belt, and a cooling fan.

Now the switches on the shifter are as follow:
Injector kill
Radiator fan
Alternator activate

I have a hierarchy set up with the relays so that the alternator can turn on independently. If I turn on the fan, the alternator comes on. If I activate the A/C pump (clutch), the fan comes on, and thus, the alternator.

Do you guys have any ideas for a thermostat for the fan? I would prefer something that does not require me to piece together an electronic circuit. Maybe a water heater thermostat?
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