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BUILD YOUR OWN ELECTRIC FAN HARNESS

Discuss all electrical and wiring issues here.

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TURNA
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BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by TURNA » Wed Mar 02, 2011 6:20 pm

All wires are 10 gauge except the wire to the TEMP switch. Those are 14

DUAL ELECTRIC FANS

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SINGLE ELECTRIC FAN


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RatMalibu's TEMP SWITCH OVERRIDE



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1980 Malibu BBC T-56 9"
1986 Oldsmobile Cutlass.
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RatMalibu
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by RatMalibu » Wed Mar 02, 2011 6:51 pm

just to add...if for some reason you want to manually turn the fan on you need a 2 pole switch (on/off) run one pole to the "- switch control" wire in your diagrams and run the other side to a good ground. I have mine set up that way, it's nice if you want it to keep cooling after it reaches the normal cut off temp of the temp switch (sitting in the staging lanes for example)
Matt

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DOUG213XRJ
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by DOUG213XRJ » Thu Mar 03, 2011 3:12 pm

Question.s 1, What size relay and type. 2, If a on/off switch is used what amp should the switch be. Thanks Alot for the Diagrams. Doug
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RatMalibu
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by RatMalibu » Thu Mar 03, 2011 3:58 pm

Before I redid the wiring last summer I was running a pair of 30 amp relays and never had any problems. Currently I have a pair of 35 amp relays for the fans. Any quality relay should work.....i.e. not the kind you typically find at Wal-Mart...go to the junkyard and start looking under hoods a lot of the 90's vehicles had weatherproof singles under the hood that work great. As far as the switch it can be anything since it's not on the "power" side of the relay it's just used as a ground to trigger the relay in place of the temp switch so it really won't see a load at all.
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Malibu 361
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by Malibu 361 » Wed Mar 09, 2011 10:22 am

Thanks guys.! I was actually in the middle of re-wiring my car and this was a project I wanted done for this season...!
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LS6 Tommy
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by LS6 Tommy » Sun Mar 13, 2011 9:25 am

What, no love for the guys with A/C? :lol:

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dragmontess
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by dragmontess » Fri Sep 16, 2011 7:36 pm

thanks for the wiring diagrams.just made my life a bit easier.

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Brown_Gbody
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by Brown_Gbody » Fri Sep 16, 2011 9:00 pm

Great write up.... AA+++
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mc1984ss
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by mc1984ss » Sat Oct 06, 2018 11:15 am

I realize this is an old thread but does anyone have e the pictures from this original post? They are no longer visable thanks to photo bucket. Also anyone have any pictures of where they mounted the relays??? Thanks in advance!
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TURNA
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Re: BUILD YOUR OWN ELECTRIC FAN HARNESS

Post by TURNA » Sat Oct 06, 2018 1:10 pm

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1980 Malibu BBC T-56 9"
1986 Oldsmobile Cutlass.
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