Axxess AX-PO90052 Data Interface with M.O.S.T. 25 Amp & SWC Porsche 2004-2009

You want to upgrade the stereo in your 2005-09 Porsche, but you don't want to lose important factory features. Axxess' AX-PO90052 interface retains the steering wheel audio controls, along with the Porsche M.O.S.T. 25 amplifier. It also provides a 12-volt accessory output and maintains your retained accessory power (R.A.P.) feature, as well as providing the navigation connections (reverse, speed pulse, and parking brake) that you'll need to install a car stereo with GPS.