Print Page | Close Window

Parking Brake Switch and DVD

Printed From: the12volt.com
Forum Name: Mobile Video, GPS, and Navigation
Forum Discription: Mobile Video Head Units, DVD Players, LCD and TFT Monitors, Navigation, GPS, PS2, PS3, XBox, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=692
Printed Date: May 15, 2024 at 8:11 AM


Topic: Parking Brake Switch and DVD

Posted By: meatball
Subject: Parking Brake Switch and DVD
Date Posted: May 10, 2002 at 7:37 AM

I recently purchased a Panasonic (in-dash) DVD player (CQ-DVR7000u) before installing, I was reading
through the install manual. I noticed that there is a wire that "MUST BE CONNECTED FOR SAFETY SAKE"
this wire was to be connected to the parking brake switch. My gut feeling is that this will only allow video to
be played while the brake is on??? Is this correct?? If this is correct, It does me no good to have the system
operating this way. So my next question is how to override this. Can I just leave it disconnected?? Does it
need 12 volts to to operate?? HELP! Thanks.

-BM



Replies:

Posted By: Velocity Motors
Date Posted: May 10, 2002 at 7:50 AM

You need a GROUND signal to this wire. If the Panasonic is anything like the Alpine, you will need to be able to toggle this wire . I conected this wire to a GROUND and put a toggle switch inline of this wire and now you can turn on/off the " parking brake " with a flip of the switch.



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA




Posted By: Big Dog
Date Posted: May 10, 2002 at 7:58 AM

Hey Meatball,

You`re right that grounding that wire will allow the indash player to function but for safety`s sake I recommend you hook it up to the handbrake and keep things legal.  This is part of this ongoing debate about cellphone distraction during driving....and as you can imagine watching the hockey game or Shania Twain can be as distracting (especially Shania).  It`s a whole different story with REAR SEAT ENTERTAINEMENT like in a van where the driver cannot see the screen. Do the smart thing.....we want to see you at the sound-offs.    posted_image



-------------
Prepare your future. It wasn't the lack of stones that killed the stone age.




Posted By: NyxBass
Date Posted: May 10, 2002 at 11:55 AM

Usually the headunit needs to see :Brake On,Pbrake On/Off/On, Brake Off

That's the sequence that will let it turn on. You'll have to read you manual to make sure that's what to do. But I've seen it often where guys use a toggle instead of the PBrake. You just need to be very, very conscious of when you use it, and realise you are breaking the law.



-------------
/NyxBass




Posted By: meatball
Date Posted: May 20, 2002 at 12:31 PM
Thanks for all for the info.  I installed the unit and used the ground with a toggle switch.  As it turns out, the Panasonic that I have doesn't need the toggle, but I guess it can't hurt.  Both monitors ARE in the headrests, so you don't have to worry about contributing to any illegal behavior!  Thanks again!




Posted By: NyxBass
Date Posted: May 20, 2002 at 9:44 PM

"Both monitors ARE in the headrests, so you don't have to worry about contributing to any illegal behavior!"

Alright I feel better now ;) Wouldn't want any of those shenenigans on my record...not me ;)



-------------
/NyxBass




Posted By: Sinister Cat
Date Posted: May 21, 2002 at 6:37 PM

Warning, do not read the following post if you are a goody two shoes, never committed a crime, always obey the law sissy!

***Begin illegal behavior***

You can bypass this little security feature 2 ways. One with switches to fool the monitor into thinking the brake has been depressed and the parking brake is on, or there is a guy near me who manufactures small computer chips that connect to those "safety" wires and fools the monitor for you. I have had it for a few months now without problems and it allows me to change my GPS info while driving (a feature disabled by Alpine's DVD GPS system) and play movies while driving as well and it frees up my dash by not having me need to install a switch or two to bypass their safety.

***End Illegal Behavior***





Posted By: gregstringer
Date Posted: June 08, 2002 at 7:03 AM

Sinister..

I too have the alpine GPS which I use "on the fly".  Why the gov't thinks it's safer to cross four lanes of traffic during rush hour, park in the emergency lane (waiting to get slammed from behind), then try to merge back into traffic is something I won't even try to figure out.  Must be in the catagory of Military "Intelligence".

I have ltd experience in auto electronics so, when my voltmeter read + on the supply side with the brake on OR off (which it should) I was lost as to how it effects the GPS.  I have resorted to depresing the PB one click.

I'll try the toggle





Posted By: rtezino
Date Posted: June 16, 2002 at 7:15 AM
Hello, my name is Reginald,I would like to know the color of the headlight input wire for a 1998 honda civic.  Thanks, by the way, your site is very useful.

-------------
Reginald Tezino




Posted By: Velocity Motors
Date Posted: June 16, 2002 at 10:17 AM

The wire is a RED and it is a ( + ) output at the light switch. Make sure you test for wire verification with a DMM.



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA




Posted By: rtezino
Date Posted: June 19, 2002 at 3:39 PM
Thanks jeff that really helped out.If  have any more questions I'll ask.

-------------
Reginald Tezino




Posted By: TPham1980
Date Posted: June 21, 2002 at 12:10 AM
how exactly do I bypass the parking break feature, Where do I connect it to? Switches?




Posted By: whcollier
Date Posted: June 28, 2002 at 11:19 PM

Sinister Cat...... can you tell me where I can get some of those chips? desperatly need them.... I just bought and tried to install the pioneer AVX-P7300DVD and the AVM-P8000R  Combination setup dvd/monitor in dash and hideaway module.... problem is that there are 2 parking brake switches one on dash unit and one on hideaway... do you know if both parking brake wires need to be connected or will one unit tell the other that the parking brake is on? I need help from anyone that can offer it email me or however it works here

Bill



-------------
Just another Gadget Junkie




Posted By: Velocity Motors
Date Posted: June 29, 2002 at 12:04 AM

Both units require the GROUND signal to operate the video portion of the features. This is a manufacturer's way to protect the consumer against vehicle collisions due to driving distractions of a monitor in the veiw of the driver & also their way of getting out of law suits from people who crash their cars because they were watching a movie while driving ! posted_image

Anyway, you can look it up on eBay or you can make your own with a toggle switch.



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA




Posted By: whcollier
Date Posted: June 29, 2002 at 8:11 AM

What do you search for on ebay, also on my pioneer AVX-P7300DVD id says that the light green wire (parking brake wire) anyway it says that the wire must be connected to the power supply side of the parking break switch...... how do I get around this? thanks for any help in advance

Bill



-------------
Just another Gadget Junkie




Posted By: Velocity Motors
Date Posted: June 29, 2002 at 8:32 AM

What you have to do is to duplicate the sequence of the braking with a toggle switch as well ( not recommended ) and also depending on the unit itself you may only need to do this once everytime the car is started so you may not need to put a toggle switch for the brake input only the hand brake. For your appication, does the LIGHT GREEN wire on the Pioneer unit say that it needs a (+ ) or a ( - ) input for this wire ? If this wire requires a ( - ) input, you just get a toggle switch and ground one side of the switch and the other side of the switch will go the the hand brake input wire on the Pioneer. You now have a toggle controlled hand brake and you don't even have have it hooked up to the hand brake wire. NOW on the other hand, if the system requires you to have a ( + ) input for the hand brake, you do the same thing, except you find yourself a switched ignition source ( don't use a constant because if you do and you leave the toggle on, you MAY drain your battery over time if not in use ). Most of the bypass chips available are for the Alpine systems, I'm not sure if the bypass units are universal. You will have to check it out. Here's a search link for the bypass units on eBay: https://search-desc.ebay.com/search/search.dll?GetResult&query=Electronic+Video+Bypass&srchdesc=y&ht=1&itemtimedisp=1&st=2&category1=3270&Top10=&SortProperty=MetaEndSort



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA




Posted By: whcollier
Date Posted: June 29, 2002 at 9:09 AM

Thanks Velocity Motors I found that one on ebay that you posted and I emailed the seller to see if that unit will work for my pioneer,(waiting on reply) anyway, I am assuming its a Positive  (+) output,  the instructions say and I quote (Light Green:  Used to detect the ON/OFF status of the parking brake. This lead must be connected to the power supply side of the parking brake switch) end quote.... Does that mean that its a positive (+) side? I hooked it up to my parking brake and I can watch video with the brake on just one click (its in a 1997 Dodge Ram 1500 Extended Cab) I am also putting in the matching navigation unit today from pioneer so I am waiting until I finish installing that to really worry completely about the video safety so I still have time for more information

Thanks Bill



-------------
Just another Gadget Junkie




Posted By: whcollier
Date Posted: June 29, 2002 at 9:46 AM

OK heres the newest blunder...naaaa just kidding  ok so I hooked up the green wire to ground and Viola it works..... DVD Cinema  But it doesnt work when video mode for RGB is selected? I Dunno wha gives... is it because the master unit needs positive or does it need negative do I need to have both hooked up to ground or one to ground and one to 12V + ? hmmm I am baffled as usual thanks for all the help past present and future

Bill



-------------
Just another Gadget Junkie




Posted By: Velocity Motors
Date Posted: June 29, 2002 at 10:19 AM

Both units need to be SAFETY installed so yes, you need to attach each unit to the appropriate polarity ( + or - ) depending on what the instructions say for each unit. They will most likely be the same but make sure you read the installation manual to be sure.



-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA





Print Page | Close Window