dual speed car fan

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shabbadabba

Member - Posts: 11

Joined: April 22, 2011

Posted: April 22, 2011 at 10:59 AM / IP Logged

im getting rid of my viscous fan for an electric fan.

the fan i have is a 3 wire 2 speed fan

i have the radiator switch to match,also 3 wire

now ive bought 2x 40amp 4 pin relays (spno type)

can i just wire 2x ignition feeds,a wire to the fan and a switched earth from the fan switch,do this for both fan speeds?

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: April 22, 2011 at 11:17 AM / IP Logged

As in battery thru fuses thru relays to fans' +12V, and IGN +12V to relay coils with other side to grounded switch(es), yes.

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dual speed car fan

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