PascalP
Legendary
Before I had the awesome Jammafier I built this quick and easy harness to allow me to play Jamma games in my NNC.
It is plug and play in between of the original JVS harness so it runs in parallel and your cab will not lose it's JVS capabilities!
The good:
- Plug n play in parallel to existing JVS harness
- 220ohm resistors on the VGA connector so plugs into the original NNC VGA cable
- Started out with an original Sega Versus City loom, so quality wiring and Jamma connectors
- All original AMP UP pins
The bad:
- Still need to wire up coin/test/service, due to laziness kicking in
- You need an high/low level converter to connect the amplified Jamma mono to line level RCA
- Not the prettiest due to how I created it, didn't crimp all AMP connectors new myself but re-purposed lots of used Sega harnesses I had lying around so I soldered in splices to split for controls etc.
Letting this go for €35 excl shipping (just the Sega harness costs more before I added lot of work and extra AMP UP connectors)
Or €45 and I throw in my high/low level converter ready to go, but I will need to buy a new one myself for my other stuff
So if you are looking for a cheap way to play Jamma stuff in your NNC, this is it, just wire up the coin/test/service yourself...
Will post pics once I remove the harness from my cab
It is plug and play in between of the original JVS harness so it runs in parallel and your cab will not lose it's JVS capabilities!
The good:
- Plug n play in parallel to existing JVS harness
- 220ohm resistors on the VGA connector so plugs into the original NNC VGA cable
- Started out with an original Sega Versus City loom, so quality wiring and Jamma connectors
- All original AMP UP pins
The bad:
- Still need to wire up coin/test/service, due to laziness kicking in

- You need an high/low level converter to connect the amplified Jamma mono to line level RCA
- Not the prettiest due to how I created it, didn't crimp all AMP connectors new myself but re-purposed lots of used Sega harnesses I had lying around so I soldered in splices to split for controls etc.
Letting this go for €35 excl shipping (just the Sega harness costs more before I added lot of work and extra AMP UP connectors)
Or €45 and I throw in my high/low level converter ready to go, but I will need to buy a new one myself for my other stuff

So if you are looking for a cheap way to play Jamma stuff in your NNC, this is it, just wire up the coin/test/service yourself...
Will post pics once I remove the harness from my cab
