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Fan relay pinout 84 z28 H.O.

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Old Mar 11, 2015 | 06:09 PM
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Fan relay pinout 84 z28 H.O.

Hi, I've finally got all of my kinks worked out minus one thing. I can't figure out where my fan switch wire is, so I'm trying to figure which wire it is coming out of the relay and just follow it. Does anyone know which wire coming out of the relay goes to the switch in the passenger head? Thanks in advance.
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Old Mar 11, 2015 | 07:51 PM
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Re: Fan relay pinout 84 z28 H.O.

Pretty sure all 84s had a clutch fan. Signal wire for the relay should be green or black. Here's the pinout for factory relay.
A) 12ga, Black/Red wire, Fan Power, This wire goes to fan positive.
B N/A
C N/A
D) 18ga, Brown wire, Relay Coil Power, This is the 12v trigger for the relay coil.
E) 12ga, Orange wire, Battery Power, This wire goes to a fuse, then battery positve.
F) 18ga, Green/White wire (some may be black), Relay Coil Low, This is the low (ground) trigger for the relay coil
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Old Mar 11, 2015 | 08:35 PM
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Re: Fan relay pinout 84 z28 H.O.

Mine has a single fan on it and I'm pretty sure it came that way. I previously owned the car and got it back. Everything used to work perfect and whoever I sold it to or who they sold it to kinda hacked up some of the wires. The original relay was an AC Delco 14078902. It was messed up so I replaced it with a BWD R645 due to the AC Delco being discontinued and the R645 was a little simpler to get.
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Old Mar 11, 2015 | 08:36 PM
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Re: Fan relay pinout 84 z28 H.O.

Also Joe Tag I appreciate all the stuff you listed but I may need you to dumb it down a little for me lol
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Old Mar 11, 2015 | 08:46 PM
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Re: Fan relay pinout 84 z28 H.O.

Ask and you shall receive.
https://www.thirdgen.org/forums/cool...fan-right.html
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Old Mar 11, 2015 | 11:14 PM
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Re: Fan relay pinout 84 z28 H.O.

Ok that was kind of helpful but my problem is my relay looks like this. Which one would be the ground?
Attached Thumbnails Fan relay pinout 84 z28 H.O.-screenshot_2015-03-12-00  
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Old Mar 11, 2015 | 11:39 PM
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Re: Fan relay pinout 84 z28 H.O.

You have a pic of the pigtail? From left to right it should be 12 from batt, 12v ign source, ground from switch, supply to fan.
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Old Mar 12, 2015 | 02:12 AM
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Re: Fan relay pinout 84 z28 H.O.

Originally Posted by Joe Tag
You have a pic of the pigtail? From left to right it should be 12 from batt, 12v ign source, ground from switch, supply to fan.
I don't but I can get one in the afternoon when I get a chance
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Old Mar 12, 2015 | 11:13 AM
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Re: Fan relay pinout 84 z28 H.O.

Ok Joe Tag. I have a pic. The 3rd wire is solid green. Would that be it?
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Old Mar 12, 2015 | 11:16 AM
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Re: Fan relay pinout 84 z28 H.O.

.
Attached Thumbnails Fan relay pinout 84 z28 H.O.-screenshot_2015-03-12-12  
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Old Mar 12, 2015 | 12:55 PM
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Re: Fan relay pinout 84 z28 H.O.

Yes. Red is 12v from battery, tan is 12 hot with ignition on, green is the switched ground and black is power to the fan.
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Old Mar 12, 2015 | 04:03 PM
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Re: Fan relay pinout 84 z28 H.O.

Thanks man
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