C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

84 Cooling Fan Relay Harness

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Old Feb 29, 2024 | 02:02 PM
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Default 84 Cooling Fan Relay Harness

I apologize if this is answered already, but I am in the process of diagnosing an issue with the radiator fan in my 84. I noticed the radiator fan relay harness was replaced with a generic aftermarket harness/relay and would like to restore it. I picked up a new harness from Top Flight, but it has six wires extending from the harness, all white. Is anyone familiar with one of these and the proper wiring?

C4 1984-1987 Chevrolet Corvette C4 Corvette 1984-1987 Cooling Fan Control Relay & Wiring Harness Repair Kit - Auto Accessories Of America (topflightautomotive.com)
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Old Mar 1, 2024 | 02:23 AM
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Originally Posted by Ptlmnulty
I apologize if this is answered already, but I am in the process of diagnosing an issue with the radiator fan in my 84. I noticed the radiator fan relay harness was replaced with a generic aftermarket harness/relay and would like to restore it. I picked up a new harness from Top Flight, but it has six wires extending from the harness, all white. Is anyone familiar with one of these and the proper wiring?

C4 1984-1987 Chevrolet Corvette C4 Corvette 1984-1987 Cooling Fan Control Relay & Wiring Harness Repair Kit - Auto Accessories Of America (topflightautomotive.com)
my relay only uses 4 terminals. from left to right it goes, #1 12ga fan wire, #2 not sure but I think wire goes to computer, most likely ground for solenoid, #3 hot when key is turned on for solenoid, #4 fusible link always hot 12ga wire. when solenoid is activated #1 and #4 are connected. can test by turning key on and grounding temperature switch on passage side of engine. fan should run.
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