Is there any way to bypass the parking break guard for a video system in a car?

Hi, what you will need is a video bypass module
ALL ECLIPSE VIDEO NAVIGATION UNITS AUTOMATIC PARKING BRAKE BYPASS HACK...
I wouldn't really reccommend it, though, as the inability to watch videos while the car is moving is a safety feature built in your stereo for a reason.

The Stereo is looking for a ground signal on the parking brake wire. It's a safety feature so that you are not watching movies while driving. To bypass this you will need to connect the stereo's parking brake to ground.

The parking brake wire (light green) from the kenwood unit needs to see ground. You could either ground the wire or use a toggle switch to ground the wire.

***DISCLAIMER*** The parking break switch in your in-car video player is a safety feature that is required by law, bypassing or disabling this switch is NOT recommended by any means. The answer I am providing is for informational purposes, neither fixya or myself are responsible for any consequences of the use of the information herein.
there are two ways to do this, there are marketed products designed to do this that come with a few parts and an instructional dvd. Or you may purchase simply a toggle switch, and some wire, and do the following.
There is a wire connected from the back of the dvd player deck to the parking break indicator bulb or wire on the dashboard (the light that comes on when your parking break is on). This wire can be disconnected from the parking break lamp and attached to a toggle switch, and then to a power source (12v+). With most manufacturers there is a "code" to enable video. Generally it's something to the effect "turn the parking break on for 1 second, off for one second, and then back on, and leave it on". Whatever the code is for your unit, you may now do the same with your switch to activate video.

just ground the parking brake wire

One of the wires at the back of the deck should be labelled parking brake. That is the wire that controls video playback. Just ground that wire and you should be good to go.

You can purchase an aftermarket bypass kit from electronics store or off ebay... But hey, be careful, no watching movies while driving... K

Just hook up the parking brake safety switch from the unit to ground. That will do the trick. Hope this helps

ITS just a ground cable hook it to the radio ground i did and mine works fine

Try grounding the parking brake wire instead of attaching it. Should bypass brake requirement for video but really should effect powering on