Check the listing for details. PAC Interface retain factory steering wheel audio controls w/ dash kit cdk642. Condition: New. Listed at 174.99 USD. Overview: The RadioPro4 (RP4-CH11) is a radio replacement and SWC (steering wheel control) interface that comes pre-loaded with amplifier retention and SWC software, navigation based output signals, and firmware that retains all of the vehicle's original safety and convenience features when replacing the factory radio with an aftermarket head unit. Functionality: The RP4-CH11 interface allows the replacement of a factory radio in select Chrysler/Dodge/Jeep vehicles with MSCAN or LSFT-CAN databus radios. Using this interface will retain factory features such as steering wheel controls (SWC), vehicle entertainment system (VES), and the factory audio amplifier whenever the original radio is removed. The RP4-CH11 also provides data bus driven outputs such as retained accessory power (RAP), vehicle speed sensor (VSS), illumination, reverse trigger, and parking brake.