Midway Mortal Kombat Kick Harness Condenser---$55
This is used to allow you to install multiple PCBs in one cabinet and have everything prewired without control issues.
Here are the connectors to make your own harnesses for this condenser:
15-pin: http://www.mouser.com/ProductDetail/Molex/22-01-2157/
12-pin: http://www.mouser.com/ProductDetail/Molex/22-01-2127/
Pins: http://www.mouser.com/ProductDetail/Molex/08-50-0113-Cut-Strip/
This is used to allow you to install multiple PCBs in one cabinet and have everything prewired without control issues.

Here are the connectors to make your own harnesses for this condenser:
15-pin: http://www.mouser.com/ProductDetail/Molex/22-01-2157/
12-pin: http://www.mouser.com/ProductDetail/Molex/22-01-2127/
Pins: http://www.mouser.com/ProductDetail/Molex/08-50-0113-Cut-Strip/