Jamma Plus Board Full Cabinet Wiring Harness Loom for Jamma PCB boards Edge connector includes -5Volts (as well as all other voltages) Both ground connections are wired into the harness (pins 1+2+27+28) All pins on edge connector are protected by heat shrink All end connectors are designed for quick connection (no soldering) and protected by plastic sleeves Used for all game boards that uses the standard Jamma wiring standard.