Well, I've been using an aftermarket HU for some time since my CD changer failed. I fixed it recently looking an OEM look. My steering wheel controls work fine when the wheel is centered (tires facing straight) except sometimes my volume up/down will change the station(happens randomly). When I turn the wheel the audio controls do not work even after a full spin (wheels turned in either direction, steering wheel straight). My horn and cruise work on all the range of motion. . I'm puzzled as I would guess if the clock spring was bad my cruise/horn would be affected too. Any ideas?