Although not in a ranger I did buy one of there units for my patrol a couple of years ago and to be honest it was the biggest let down, was hard to use was increadably under power to the point that it wouldn't play music and do mapping at the same time, nor would it play video cleanly even after I reduced the quality of the video to try make it easier for the unit. And lastly the sound quality out putted by the Polaris was terrible, I have a really nice sound system in my patrol and could never get a decent sound out of it, I was so disappointed after installing the whole stereo till I threw the Polaris and installed a pioneer head unit and the difference in sound quality is truely amazing.
Anyway I'll never touch anything made by Polaris a again, rant over.
Shane