Having proper wire connections to your trailer and vehicles a priority. That is why Maasdam provides you with the most common wiring connections in the industry. We offer three wiring kits and two adapters. Maasdam"s 4-Way Flat Connector has a 60-Inch wiring harness. Made of 18-Gauge bonded wire, the wires are color coded so you know which wire will light your turn signals and break lights. The ground wire runs the entire length of the unit. Connects easily to both the trailer and vehicle is ends.