If you want to keep your steering wheel controls you will need an extra adaptor, please message us for details on ordering the package with a steering wheel control adaptor All our packages are made to make upgrading your car stereo a simple fit and play process in most cases. All our upgrade packages come with all the installation parts needed to upgrade your car stereo without paying the RRP for all the installation parts.. The DEH-s100ub's built-in amplifiers produce pristine sound delivered at 4 x 50W of pure,proven MOSFET power. If that isn't enough, you can always use the RCA pre-out to hook up another stereo component, like a subwoofer or an extra amp for the rear speakers for example. If your music is stored on a portable device, like a USB stick, the front panel's illuminated US.