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Parking Brake sensor wire

Discussion in 'Audio & Video' started by comnenus117, Feb 15, 2010.

  1. Feb 15, 2010 at 6:28 PM
    #1
    comnenus117

    comnenus117 [OP] Member

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    I've recently purchased the Kenwood DNX 9140, and I have spliced the 9140 wiring harness to the aftermarket connecter harnesses from Scosche. What's left for me is the long light green wire, which supposedly gets spliced to the parking brake sensor wire. Is this simply a ground wire, and if so, does it need to be spliced to the parking brake wire? Or can it be grounded to...any ground (such as the black ground wire on the harness leading to the battery)? If it needs to go specifically to the parking brake sensor wire, where exactly is this wire located in the truck?

    Lou
     
  2. Feb 15, 2010 at 6:45 PM
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    shitroc

    shitroc Master of War

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    it needs to go to ground, but the thing is ya cant just put it straight to ground. by that i mean u have to interupt it by a switch, hittin the switch to ground whenever ya want to play a movie or whatever. thats what its like with my clarion screen anyway. By switching it to ground, its the same as hookin it up to some "parking brake sensor wire"
     
  3. Feb 15, 2010 at 6:48 PM
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    shitroc

    shitroc Master of War

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    any single pole 12 volt toggle switch will work, bring one side of that green wire into one terminal on the switch, then run a wire to any suitable ground and hook it to the other terminal on the switch
     
  4. Feb 15, 2010 at 7:24 PM
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    comnenus117

    comnenus117 [OP] Member

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    Thanks! However, the parking brake detection switch harness is already in the truck, and the DNX 9140 manual states to connect the light green parking sensor wire (from the head unit harness) to this switch harness. Where is this harness (or switch) located in the truck? Is it around the parking brake itself, or elsewhere in the truck?

    Lou
     
  5. Feb 15, 2010 at 7:30 PM
    #5
    shitroc

    shitroc Master of War

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    ohh, i took the easy way i guess lol , i didnt want to have to have my park brake set to watch a dvd
     
  6. Feb 16, 2010 at 5:44 AM
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    hookedontronics

    hookedontronics Well-Known Member

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    use a pac-tr7 and then you can watch when you drive without the truck in park and the e-brake on. they run about 20-30 bucks
     
  7. Feb 16, 2010 at 7:10 AM
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    audi2000

    audi2000 Well-Known Member

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    i have 8120, went to ground so that passenger would have ability to watch movie.
     
  8. Feb 16, 2010 at 4:39 PM
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    comnenus117

    comnenus117 [OP] Member

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    is there any particular amperage I need to worry about if I use the single pole, 12V toggle switch?

    Lou
     
  9. Feb 16, 2010 at 4:59 PM
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    shitroc

    shitroc Master of War

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    no theres no need to worry about current because there wont be any. its just a simple way to interrupt the path to ground that you need. It doesnt necessarily need to even be a 12volt toggle switch, any kind of switch would work.
     
  10. Feb 16, 2010 at 5:48 PM
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    Reznor88

    Reznor88 Well-Known Member

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    I have the Kenwood DNX-5120 and just grounded my parking brake wire, unless something has changed no switches or anything should be required for the kenwoods, I know there are some brands that require them though.

    From what I can tell, hooking up the HU brake wire to the parking brake lets the HU know when it's ok to play movies and whatnot because the truck is not in motion. If you just ground the wire out the HU should always see it as ok to play movies or input the GPS.
     
  11. Jul 25, 2010 at 1:41 AM
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    HyperBolik

    HyperBolik Active Member

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    I can confirm. I have the Kenwood 8120. I grounded mine to the ground on the wire harness on my 2010 and it works fine.
     
  12. Jul 26, 2010 at 4:22 PM
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    dangerbird

    dangerbird Well-Known Member

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  13. Jul 28, 2010 at 5:05 PM
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    dubbedSinner

    dubbedSinner blisters

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    the best thing to do with that wire is to just ground it to the ground in the harness like mentioned before. i did that with my panasonic double din and it allows u to watch videos anytime u want. u dont have to worry about flipping a switch or putting the ebrake on
     
  14. Jul 31, 2010 at 10:03 PM
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    burrito

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    To find the parking brake wire harness look under the dash. See the parking brake pedal assembly? At the top of the pedal assembly there is a switch with a green wire coming from it. Thats the "harness". Splice the wire from the stereo to this wire. When the parking brake pedal is depressed the switch contacts close putting the wire to ground. The wire is there to complete the circuit for the parking brake light on the dashboard.
     
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