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Also I was wondering if you could play a movie while you were driving. I heard that the parking brake had to be on or something, but that doesn't seem right. Any help is appreciated.


By law in many places professional installers have to do this. Odds are, if your installer says they have to do it, it is illegal to watch DVDs in the front area of your car while in motion. Monitors mounted behind the drivers head do not have this restriction.