I've got the Kenwood KVT512 in my Honda. I am assuming most of the newer ones like yours and mine no longer can be fooled by a simple ground. You can either get a switch and manually switch if everytime your in the car to think your parked, or you can get an automatic bypass like I did. I got it off eBay and it was for my specific stereo....I simply wired it up and have never had any problems running DVDs or whatnot while in motion.