he has "more than ten" : ebay ... and perhaps has the wiring? ( you can ask)
the connector you want is JST RA-2611 and the pins are RA-SC1290 ...and like almost any other JST connector, you have to buy it from them directly @ https://www.jst-mfg.com/product/detail_e.php?series=206 ... which bugs the crap out of me so I have never done it but I hear it works well, except that you need to buy a minimum of 10!
Bump! Having a hard time finding this simple JAMMA I/O for a non-gouging ebay price. (i would rather not have to resort to ebay fleecers). Surely someone in the community has one available?