Will it start hot?
Thread Starter
Intermediate
Joined: Jan 2014
Posts: 43
Likes: 2
From: Vermontville Michigan
Will it start hot?
I just installed a dual electric fan setup in my big block C3, and haven't ran the car yet.
I hooked the thermostatic switches 12v to pos. side coil.
The 12v side relay to back of alternator.
This setup will allow the fans to run as soon as I turn the key on with the engine up to temp.
Will the fans draw too much amps to not allow the starter to crank properly?
Do I need a manual override switch on the relays?
I hooked the thermostatic switches 12v to pos. side coil.
The 12v side relay to back of alternator.
This setup will allow the fans to run as soon as I turn the key on with the engine up to temp.
Will the fans draw too much amps to not allow the starter to crank properly?
Do I need a manual override switch on the relays?
Safety Car
Joined: Oct 2007
Posts: 3,729
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From: Austin Texas
Corvette of the Year Winner 2017
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you have to add up the current draw of the 2 fans,
your gonna draw excess current thru your inginition wiring,
I would not recommend wiring this way.
now you could add a relay for the gnd using the coil as a signal.
this would avoid extra current draw thru your igniion coil power/gnd.
your gonna draw excess current thru your inginition wiring,
I would not recommend wiring this way.
now you could add a relay for the gnd using the coil as a signal.
this would avoid extra current draw thru your igniion coil power/gnd.
Thread Starter
Intermediate
Joined: Jan 2014
Posts: 43
Likes: 2
From: Vermontville Michigan
The ignition will only have the draw to signal the relay. The fans will draw off the alternator.
Both fans together draw 37.5 amps.
Both fans together draw 37.5 amps.
Last edited by GearDrive65; Jul 28, 2014 at 01:47 PM.
