To simplify installation, Dakota Digital supplies crimp connectors for a fast, weather-resistant connection. Dakota recommends soldering for the best connection possible. The company provides a schematic for the wiring but the simple version is Tail light=Brown to Brown or Black, Driver's Turn=Green to Green or Pink. Passenger's Turn=Green to Yellow or Purple, and Ground=Black to Chassis or Body. Here our buddy Lucky Costa is soldering on the terminal.