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Old 01-11-2025, 06:48 PM   #1
RT-BRZ
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JDL Spal Fan Shroud and Fans Wiring

After doing some research, it would appear that the proper way to use the Spal fans in the JDL fan shroud is to use the Spal relay kit(s) and use the stock wiring to signal the relays.

The question is this; where is a good place to get the 12v power for the fan relays? I have the wiring diagram for the car but I don't see any clear area in the under hood fuse box where I can grab 12v.

Does anyone have a good diagram and/or pics of how they did this?
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Old 01-12-2025, 12:03 PM   #2
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OK, well, since there don't seem to be many that can or will respond, I guess I'll dump what I've figured out here to see if that generates any conversation.

I have created a wiring diagram and I also have a diagram of the OEM fuse box under the hood to aid in some of my thinking.


The biggest question I really have is how to connect the Spal relays to the OEM plugs to allow the ECU to control the fans.
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Last edited by RT-BRZ; 01-13-2025 at 10:14 AM. Reason: Removed old drawing that was just wrong and attaching "correct" one.
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Old 01-13-2025, 07:35 AM   #3
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OK. Using some resources outside of here, I think I figured it out. Since there doesn't seem to be anything readily available, here is a JDL Dual Spal Fan to 2013 Subaru BRZ OEM fan conversion wiring diagram. Maybe those search terms will bring people here.

I created about 75% of this diagram. I could have recreated the OEM section of the diagram but I'm too lazy to do that.

If anyone things I'm off on this, let me know.
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Last edited by RT-BRZ; 01-13-2025 at 01:19 PM. Reason: Had some changes in thinking. The result is the same.
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Old 01-21-2025, 12:56 PM   #4
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That is how I wired mine.
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