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Pioneer Parking Brake Bypass

Does anyone have specifics on which model relay will work? I'd specifically like to find one locally at radioshack.

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Old 01-15-2012, 07:47 PM   #1 (permalink)
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Default Pioneer Parking Brake Bypass

Does anyone have specifics on which model relay will work? I'd specifically like to find one locally at radioshack.
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Old 01-15-2012, 07:50 PM   #2 (permalink)
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any SPDT relay will work and yes you can get one from radio shack. However if it is a Nav unit the relay bypass will not work.

85 - Remote Turn-on
86 - Ground
30 - Ground
87 - Parking Brake Input Wire
87a - not used
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Old 01-15-2012, 07:57 PM   #3 (permalink)
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Old 01-15-2012, 08:09 PM   #4 (permalink)
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Cool! I should make one next time. I just ran a manual momentary switch on mine.
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Old 01-16-2012, 11:00 AM   #5 (permalink)
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Thanks guys.
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Old 01-28-2012, 10:27 AM   #6 (permalink)
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Someone posted this before and I asked this same question, but no one gave me an answer that satisfied me. Why is this relay necessary?
I've installed multiple video headunits and always grounded the parking brake wire directly, with no relay. I've never had a problem. To me, why does it matter if the parking brake wire is only grounded when the head unit is on?
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Old 01-28-2012, 10:48 AM   #7 (permalink)
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Originally Posted by My_third_Z View Post
Someone posted this before and I asked this same question, but no one gave me an answer that satisfied me. Why is this relay necessary?
I've installed multiple video headunits and always grounded the parking brake wire directly, with no relay. I've never had a problem. To me, why does it matter if the parking brake wire is only grounded when the head unit is on?
I'm working on this just today and have the same question. Why not just ground it and be done?
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Old 01-28-2012, 04:12 PM   #8 (permalink)
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If the pioneer radios see a ground when they power up they assume it has been bypassed. So the relay will energize After the radio is turned on simulating the brake being applied after the car was started
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Old 01-28-2012, 05:47 PM   #9 (permalink)
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Exactly... I just want to add one note. You don't need a double throw relay like mentioned above. I found a single throw SPST that works fine at Radioshack.. in the midst of my install but I have run the car with the relay and watched a DVD (with parking brake off).
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Old 01-28-2012, 06:22 PM   #10 (permalink)
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Quote:
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If the pioneer radios see a ground when they power up they assume it has been bypassed. So the relay will energize After the radio is turned on simulating the brake being applied after the car was started
Gotcha. Thanks for explaining it.
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Old 01-29-2012, 05:25 AM   #11 (permalink)
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I'm running the same relay setup on my 4300 and it works flawlessly
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Old 12-08-2012, 04:45 PM   #12 (permalink)
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Quote:
Originally Posted by BigNate View Post
If the pioneer radios see a ground when they power up they assume it has been bypassed. So the relay will energize After the radio is turned on simulating the brake being applied after the car was started
If I have a kenwood headunit can I ground the parking brake wire directly to the body without a relay?
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Old 12-11-2012, 12:42 PM   #13 (permalink)
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I have the x920BT in my 2010 NISMO and simply grounded the parking brake wire. Works perfectly. Not shure why there is still so much hoopla over the need for a relay.
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Old 12-11-2012, 12:56 PM   #14 (permalink)
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Originally Posted by arnoldas View Post
If I have a kenwood headunit can I ground the parking brake wire directly to the body without a relay?
This will work. No need for a relay with Kenwood units.
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