Brother In-Vehicle Power Supply for PJ7 and PJ8 Printers

Brother part # LB3692

This power cords connects to your vehicle's 12 volt source and then plugs into the printer.  Cable has BARE WIRES on the vehicle end for hard-wiring to your vehicle.  Works with PJ7 and PJ8 series printers.  

Total length = 14 feet.

Additional details are available on the Brother website here.