Sega Aero City Harness Extension

As much as I love the Aero City, one thing that is really annoying about them is the length of the JAMMA harness it comes with. It starts off with a 36 way fingerboard to the JAMMA edge for a total of 30cm. It’s not long at all. It doesn’t reach a CPS2 board if it’s mounted on the PCB holder.

This has been a long overdue project as I knew it would be time consuming and quite boring to do, but it definitely needed to be done. 

I know there’s a pinout on the manual found online, but I also wanted to verify it myself, so I spent a good hour or so with the multimeter mapping out the pins and where they went from the JAMMA edge to the Sega Fingerboard. 

The end result is this schematic:

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Since I wanted to keep a Hirose JAMMA edge and not the cheaper ones, I ended up purchasing 2x “Sega VS City” harnesses from YAJ to “sacrifice”. At $40 AUD each, I was OK with this sacrifice since the cost of a JAMMA edge plus all the wires would be more than the cost of the VS City harness. I depinned the connectors (which I can re-use) and then started chopping.

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After a good solid couple of hours of cutting, stripping, soldering, checking, re-checking and then a full continuity reference check, I ended up with a harness that’s essentially doubled in length giving me A LOT more leeway inside the cabinet.

[IMG]

Rinse and repeat for the second harness (because I’m a complete sucker for tedious jobs)

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By the end of the day, I’ve now got two “OEM” style Sega Aero City harnesses, fortunately for me and the schematics, they all check out and I didn’t fry anything, the 12v wire WASN’T in the 5v section or vice versa 😀

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