In order to run all 3 simultaneously, you will need the Vector Labs Nintendo board switcher... The connectors that come with the DK3 control panel kit do NOT hook up to a DK wiring harness, therefore a DK3 control panel (with those big white plastic connectors) could not connect (stock) to a board switcher or DK cab.... what you CAN do, is get a DK control panel wiring harness and hook it up to the control panel. Does that make sense? I am not sure if I am being clear...