Question about Jensen RG40 Portable DVD Player with Screen

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My head unit will not play dvds and i dont know where the parking brake switch is

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My head unit will not play dvds dnt have manual

Posted on Sep 27, 2008

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My DVD player keeps saying forbid while driving. I just got the head unit and can't figure out how to get it to play DVDs


Most dash-mounted dvd players have a "park" switch that disables them from playing unless the vehicle is in park - cuts down on distracted driving.

Dec 30, 2015 | Televison & Video

1 Answer

My jensen is telling me i have to b in park to watch dvds


You need to trick it into thinking you're in park. If you post the model the directions can be specific. There should be a signal line from your head unit to connect to the brake. You can hook a $2 toggle switch up under the dashboard, or hook up an auto relay between the head unit power line and brake signal line.

Apr 30, 2011 | Jensen Car Audio & Video

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Clarion vz400 what do the parking brake wire do and what do i connect it to


connect it to the ground and your video will play, you dont necessary have to connect it to the parking brake, just ground it out, and your dvds will play, if you dont ground it out, the dvd video wont show, it will give you an error message saying that you need to stop driving in order to watch dvds

Aug 09, 2010 | Car Audio & Video

3 Answers

Parking brake safety bypass


here is what you need to do is, get a toggle switch and hook one side to a ground and the other side to the parking brake wire on the unit.
use the switch as a brake because you have to set brake for a few seconds then release and set again but keep it on this time.
you will have to do this every time you start the car.

Jun 26, 2009 | Dual Electronics XDVDN8190 GPS Receiver

1 Answer

I cannot play DVDs without the parking brake engaged how do i bypass this?


I ran across of alot of lcd head units that requiers the parking brake wire connected so it will show the video, (usually just audio if parking brake not on). But if you connect that wire to a proper ground (screen always on) or a grounded switch so you can control it maually (turn it on or off when you choose)

May 30, 2009 | Pyle PLD52MU Car DVD Player

1 Answer

It wont play dvds or any kind of video


Having the car in "park" is not the key. The unit needs to see a 'ground' on the light green wire that attaches to the parking brake. (see manual). You can get around this by installing a toggle switch OR a relay that will user the 'amp remote' wire as the trigger.

May 28, 2009 | Pioneer AVH-P4000DVD Monitor

1 Answer

Installed a dvd player but i can't get it to play dvds


On the parking brake under the dash is a switch at the top that actuates the parking brake light. On most vehicles most are two wire switches, but some are one wire switches. If you have a two wire switch then you can unplug it and use a test light with the ignition turned on without starting the vehicle and test the wires to see which is the hot wire and then connect to the one that has no voltage on it because it is the ground for the switch. The wire is used to detect the parking brake position as engaged before it will allow viewing of the DVD player when the vehicle is not moving. When the brake is off the DVD player will not play DVDs, this is a safety measure so the driver will not be distracted while driving. Good Luck, RAC

Apr 20, 2009 | 2003 Chevrolet Trailblazer Ext

1 Answer

Parking brake on a phase linear uv8


pulll the unit out there will be a wire marked park brake or most likly pink (remeber coming from the head unit ) next splice it in to the black wire or to a ground

Jan 30, 2009 | Jensen VM9411 Car Video Player

1 Answer

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


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.

Aug 17, 2008 | Car Audio & Video

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