Steering Wheel control Primary harness adapters convert the commands from your car's steering wheel controls to a code that an aftermarket radio can recognize. A patch lead is also requires for SWC type systems based on the brand of head unit you have. for more details check out our you tube video.
CHSU4C Factory Nav units IMPREZA WRX/STI 2008-07/2010 For WRX that have factory Kenwood NAV SYSTEM
Red, White and Yellow RCA's (connect RCA to "Aux in" on aftermarket headunit)
This product is also known to work in the following vehicles: Subaru Impreza 2007-2011 GE, GH, GR, GV Subaru WRX 2007-2014 Subaru Forester 2008-2012 SH