If your car stereo has a line in, you can use that as well. If you have neither of those options, FM modulators are available, though one isn't included. I review for details. Through careful adjustment of input volumes on the Shuttle and my equalizer, I was able to minimize the noise, though not eliminate it. I am pleased to report that Xeenon has revised the design of their units, and the Shuttle II suffered from no alternator whine at all.
Progress is good.
Since the remote cable already plugged in at the back, these changes add a lot of versatility, clean up the look of the front of the Shuttle and make it easier to mount. Looking at the kit overall, it's clear that Xeenon has included everything you'll typically need. Inc. All rights reserved.