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I cant play dvds with out the parking brake on but i have my jensen in my house right now so how do i get the override code to come up

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I don't know where everyone keeps coming up with the idea that there's a code you can enter to defeat this lockout.

DVD head units have one extra wire in their wiring harnesses, compared to a standard CD head unit. On my Jensen, it's a peach-colored wire, and is 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 my Jensen unit, 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 whatever manner is required by the manufacturer of your head unit. If there is no off/on sequence with yours, as there is with mine, simply ground the wire to a screw inside the dashboard and you're done.

Posted on Aug 18, 2008

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My radio does not play dvds it keeps saying that the parking break is on but it is not no matter what the car is in it just doesn't play any dvd and the radio is dvd compatible.


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Hellow. I got a Naxa ncd 688 and a friend connected the stereo, I had a problem because i can,t watch videos or DVD, and I saw something in the manual about the parking switch. Please Help.


I have a Naxa NCD-694, and I heard about similar problems. Apparently when you ground it like it tells you (the green long wire) to the parking brake, the video screen is set to disengage automatically! ((Naxa says if you dont hook up to your parking brake, your video screen might not play)) However after trying the following work-around myself, I found a few other people who had gotten around this safety feature with no consequence (other then distraction!) I guess NAXA just claims that, so they wont get sued if you crash while watching dvds in your car! *Its really simple! Just unhook the long (at least a foot or so) green wire (It should be labled "ground-Parking Brake" on it too) you previously attatched to your parking brake wire, and then ground it somewhere else! I just hooked it up to my black ground also coming out of the back of my naxa. (If you want to verify this b4 you unhook your deck, go in your car now, and lift your parking brake, and pop in a DVD! I bet itll play!) The wire will turn off the screen whenever the parking brake isn't engaged(or not grounded) So by grounding it to something permanent (in this case the black ground wire), your unit will never recieve the signal saying to turn off the screen!
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Aug 15, 2010 | Car Speakers & Subwoofers

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1 Answer

THE SCREEN WONT TURN ON


it might be hooked up so that you have to have the parking brake on while you play dvds or you might have to turn your dimmer all the way down for it to play while driving. does it play the audio and everything when you put a dvd in but wont displau if so then that is your problem.

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1 Answer

Parking brake wire override


DVD head units have one extra wire in their wiring harnesses, compared to a standard CD head unit. On my Jensen, it's a peach-colored wire, and is 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 my Jensen unit, 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 whatever manner is required by the manufacturer of your head unit. If there is no off/on sequence with yours, as there is with mine, simply ground the wire to a screw inside the dashboard and you're done.

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