1).which is a full jamma harness with connectors for power supply, monitor, joysticks and buttons(microswitches).
2).It comes with edge connector, push button lugs, power lead, RGB monitor cable. Also includes extra button loom and connectors for all parts of your jamma.
3) Both ground connections are wired into the harness (pins 1+2+28)
4) Used for all game boards that uses the standard Jamma wiring standard.