how to wire in over ride for electric fan

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83trekker

Member - Posts: 27

Joined: October 03, 2014

Location: Alberta, Canada

Posted: May 18, 2015 at 12:26 AM / IP Logged

I have a aftermarket electric fan kit for my early 80's chev 350. It has on the relay 1 wire for battery constant run through a breaker, 1 wire to the electric fan +, 1 wire to acc + when key is one, 1 wire to a thermostat in the head for the ground which is also the thermostat for the relay when engine hits 185f. Its a 40/60 amp relay.

The electric fan is grounded to the body.

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I am wondering how to wire in so I can turn the electric fan on anytime I want to help cool it, kind of like a newer vehicle when you turn the ac on it auto kicks on the fan on.

Im stumped any help would be great, thanks!

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howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: May 18, 2015 at 2:12 AM / IP Logged

Join a wire to the thermostat wire, run it to a switch and ground the other side.

If you want illumination, 12V+ ACC to lamp, other side to joined wire.

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hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: May 18, 2015 at 8:55 PM / IP Logged

Yea just put a switch across the Thermostat.

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John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

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83trekker

Member - Posts: 27

Joined: October 03, 2014

Location: Alberta, Canada

Posted: May 19, 2015 at 8:31 AM / IP Logged

worked perfect thanks all!

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