The Micro/Mid Powertap has five individual wires on the opposite end of the tee connector. Connect the white and brown wire to a 4 to 6 amp in-line fuse. Connect your in-line fuse to a 9-16 Volt DC source. Then connect the gray, blue, and black wires to DC ground. Check your bus power by connecting an N2KMeter to the Powertap tee and select option #4.