Abstract: A kit for powering an aftermarket device from a wiring harness made available to the interior of a vehicle, the wiring harness connector comprising a 12 V port and a ground port, both accessible to a user. The kit includes a power cord having a first end and a second end, the first end having a pair of first end connectors and the second end terminating in a plug for powering the user-selected aftermarket device. The power cord further includes a length of two power cord wires, a first power cord wire for carrying current from a 12 V source from the wiring harness and a second power cord wire establishing a ground connection between the wiring harness and aftermarket device.