Factory amplified Systems will not fade as neither the aftermarket radio or the RP interface have the ability to control the amplifier's fader.
2008 F-250/350/450: Not compatible with model trim XL (fleet vehicles). These vehicles do not have the necessary CAN bus signals
2006-2007 Ford Freestyle: Does not retain RSE
2006 Lincoln Zephyr: Does not retain the THX amplifier
Description
The innovative new RadioPRO4 PAC RP4-FD11 radio replacement interface comes pre-loaded with amplifier retention and steering wheel control (SWC) software, navigation based output signals and other features that save time and money during installation.