Question about JVC KD-DV4200 Car DVD Player
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Posted on Jan 02, 2017
This is illegal to do in many states so it is not recommended that you bypass the saftey feature and can result in you being ticketed and fined. On this unit, for testing purposes, you would ground the parking brake wire and the screen should come on and stay on.
Posted on May 07, 2007
Here's what you need to know: DVD
head units have one extra wire in their wiring harnesses, compared
to a standard CD head unit. On the Jensen, it's a peach-colored wire,
the activation wire for the DVD feature. During the installation, the
instructions call for this wire to be tapped into the emergency brake
indicator light wire. The reason is this:
The e-brake indicator light is what is called a "ground complete" circuit. That means that the bulb always has power applied, but when you pull the brake, that puts a ground to the wire and completes the circuit, allowing it to illuminate. The head unit sees this ground, and activates the DVD player.
In mine, I simply ran this wire to a ground (I used a screw near the fuse box), and I put a switch on the wire, so I could break the ground contact at will. Jensen calls for a procedure to activate DVD playback. In their instructions, they tell you to select DVD from the option menu, and when the "lawyer screen" comes up (the one warning you to park before you watch a movie), you release the e-brake for 3-5 seconds, and then reapply it. To simulate that with the switch I used, I leave the switch closed (activated), and select DVD. Then I flip the switch "off" for 3-5 seconds, and flip it back "on". This tricks the head unit into thinking I put the e-brake off for a few seconds and then put it back on, and the movie will start. Then I can drive away.
Basically, ground the wire that is used for DVD activation, and put a switch inline on it. Then you can break and reapply the ground in the manner of the e-brake cycle I mentioned earlier.
Posted on Sep 13, 2008
Just go to the set up menu ( Your screen should say setup at the upper center of your screen ) Then press 5, 4, 3, 2, 1, 0 with your remote control and a second menu will apear, on your left side press the second option and select parking bypass to on.
Posted on Oct 13, 2008
It is made that way so you have to set the parking brake before you can view the dvd. You can bypass this by grounding the pink wire coming from the back of the unit.
Posted on Aug 14, 2012
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