Today, we're going to review part number 18004. This is the Draw Tite 4-Pole Trailer End Connector. This is 12 inches long. It also comes with the 4 wire caps to attach it to the wires on your trailer. Basically, the standard 4-way wires would be the white for the ground, the brown for the tail lights, the yellow for the left turn and brake, and the green for the right turn and brake, so when you… see more >