The CTGM3100 interface allows the replacement of a factory radio in select vehicles with the 29-Bit Data-Bus. Using this interface will retain factory features such as steering wheel controls (SWC), rear seat controls, warning chimes and the factory Bose amplifier when the original radio is removed. Use of this interface also allows you to program two radio functions to each SWC button by using short press long press dual command functionality. The CTGM3100 provides data bus driven outputs such as retained accessory power (RAP), vehicle speed, illumination, reverse trigger and parking brake.