Review on Enhance Your Car Audio with Crux SWRAD-55 Radio Replacement Accessories by Randy Montiel

Device integrated into Audi S4 Worked for me without much hassle - I used crimp connectors to connect the wiring harness that came with the radio and the CRUX component Originally used steering wheel controls, left scroll wheel changed Channels on XM, terrestrial radio and tunes on media. The right scroll wheel changes the volume, just like the original radio. About two weeks later, I accidentally changed the function of the left and right scroll wheels, apparently by clicking the scroll wheels, with the left scroll wheel changing volume and the right scroll wheel appearing to change Bluetooth volume. The CRUX online information does not cover this reconfiguration and there is no contact information for technical support. The component gets five stars for replicating the original controls, but drops to three stars for undocumented features.