The Aerpro CHTO15C 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 various Toyota vehicles with 28 pin connector, 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. This interface also includes an antenna adaptor, reverse camera retention adaptor and USB retention lead. 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 retains the Factory Antenna, USB Input, AUX Input and Reverse Camera when connected to compatible aftermarket headunits. It also provides outputs for Reverse Trigger, Park Brake 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. - Retains USB and AUX if originally fitted in the vehicle, aftermarket headunit requires rear USB and AUX (RCA) inputs. - Retains factory reverse camera if originally fitted to the vehicle, aftermarket headunit requires RCA reverse camera input (includes 24,16 and 4 pin adapters). - Compatible with listed vehicles that have 28 pin connector. - Not compatible with factory premium, OEM amplified or factory upgraded systems.