2025 718 Cayman GTS 4.0 rear trunk Fusebox

Including the Spyder, GT4, and GT4RS
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Robertsmania
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My car has this fuse box in the right rear corner of the trunk.
Fusebox_Trunk_01.jpeg
Fusebox_Trunk_01.jpeg (3.85 MiB) Viewed 401 times
Does anyone know or have reference for what the fuse slots are assigned to?

I have a project that would be easier if I can find power to tap into in the trunk and suspect there may be a circuit I can use. It would be really nice to know what all the present fuses are for and what the empty slots might be.
2025 982/718 Cayman GTS 4.0
2025 982/718 Cayman
2010 987.2 Cayman S (220k miles!)
2000 BMW M-Roadster
1998 BMW Z3
1974 Alfa Romeo Spider (1st car as a teenager, still own it!)

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Tom
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Robertsmania wrote: Mon May 18, 2026 4:05 pm My car has this fuse box in the right rear corner of the trunk.
Fusebox_Trunk_01.jpeg

Does anyone know or have reference for what the fuse slots are assigned to?

I have a project that would be easier if I can find power to tap into in the trunk and suspect there may be a circuit I can use. It would be really nice to know what all the present fuses are for and what the empty slots might be.
In the Track Nanny installation instructions, posted in the instructional sub-forum here, it shows which fuse location in that panel we use to provide power.

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Robertsmania
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Tom wrote: Tue May 19, 2026 6:40 am In the Track Nanny installation instructions, posted in the instructional sub-forum here, it shows which fuse location in that panel we use to provide power.
Splendid, thank you!

That is very helpful. The fuses in that row (B) on my car do appear to match the photo reference in the instructions. The suggested fuse to use (B2) does indeed appear to be switched by the ignition.
2025 982/718 Cayman GTS 4.0
2025 982/718 Cayman
2010 987.2 Cayman S (220k miles!)
2000 BMW M-Roadster
1998 BMW Z3
1974 Alfa Romeo Spider (1st car as a teenager, still own it!)

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J-Dub
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Inquiring minds want to know, what is the potential upcoming project?
1957 VW Beetle
2004 VW R32
2021 Porsche Cayman GTS 4.0

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Robertsmania
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J-Dub wrote: Wed May 20, 2026 6:39 pm Inquiring minds want to know, what is the potential upcoming project?
I'm building a system to stream from racetracks and autocross events.



This video is from my previous car and the way things were setup, it was pretty rough. With the new car, I'm working on a much better, more secure and robust solution.
2025 982/718 Cayman GTS 4.0
2025 982/718 Cayman
2010 987.2 Cayman S (220k miles!)
2000 BMW M-Roadster
1998 BMW Z3
1974 Alfa Romeo Spider (1st car as a teenager, still own it!)

#5

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