Pre-assembled plug for our 1.8T 20V RS fan switch. We recommend the following connections for the temperature sensor: Red =continuous plus (30A back-up fuse required) White =fan speed 1 Black =fan speed 2 We recommend the complete kit with Water thermostat to be installed. Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com