X AUTOHAUX 1 Set Auxiliary Upfitter Switch Panel Kit for Ford F-250 F350 F-450 F-550 Super Duty 2005-2006 Auxiliary Switch Panel Wire Harness Wiring. Manufacturer: X AUTOHAUX. [ Plug and Play ] Installed on the dashboard, the relay group plug connection is located on the left side of the steering column, the ignition light is on and the device is connected correctly, the led will light up.