The Aerpro CHSC1C Steering Wheel Control Interface (SWC) allows you to upgrade to an aftermarket headunit whilst maintaining use of your factory steering wheel controls. Engineered to suit Scania R-Series (2004-2008) models the steering wheel control interface includes a harness that is fitted with a vehicle specific plug designed to connect directly into the existing wiring in the vehicle with ease no cutting of the factory wiring harness in the vehicle is required. Installation of the aftermarket headunit is simplified even further when paired with the optional Aerpro APP9 Headunit Secondary ISO Harness & SWC Patch Lead which connects between the aftermarket headunit and the Aerpro Steering Wheel Control Interface. This interface is CANBUS compatible and provides various outputs including Reverse Trigger and Speed Pulse. - Please Note:Steering Wheel Control Interfaces vary between models to find the correct part for your vehicle use the Aerpro Vehicle Selector. - A Steering Wheel Control Patch Lead is required to be used in conjunction with this part to enable Steering Wheel Controls to function (sold separately). Aftermarket headunit must be SWC compatible and Steering Wheel Control Functions may vary from the OEM Functions. - INTERFACE TYPE: CANBUSPATCH LEAD TYPE: CPHONE BUTTON COMPATIBILITY: NOVOICE ASSISTANT BUTTON SUPPORT: NOOUTPUTS:REVERSE TRIGGER: YES (PURPLE/WHITE)PARK BRAKE: NOSPEED PULSE: YES (PINK)ILLUMINATION: NOAMP REMOTE: NOOTHER RETENTION:OEM REVERSE CAMERA: NONOTES:Aftermarket headunit must be SWC compatible. - SWC patch lead is also required to enable SWC (sold separately). Automotive Superstore After - Pay Zip - Pay Humm