BUILD YOUR OWN ELECTRIC FAN HARNESS

[TURNA]

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

DUAL ELECTRIC FANS









SINGLE ELECTRIC FAN






RatMalibu's TEMP SWITCH OVERRIDE

[RatMalibu]

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)

[DOUG213XRJ]

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

[RatMalibu]

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.

[Malibu 361]

Thanks guys.! I was actually in the middle of re-wiring my car and this was a project I wanted done for this season...!

[LS6 Tommy]

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

Tommy

[dragmontess]

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

[Brown_Gbody]

Great write up.... AA+++

[mc1984ss]

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!

[TURNA]