Parking Brake Bypass Relay Diagram

jamesx62 [OP] New Member

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I bout an Alpine iLX-W650 and am having trouble with the connection to the "parking brake", which many say you can just ground the wire to bypass. I've grounded the wire and still when I turn the truck off and then back on, I'm locked out of settings. Where can I find the actual parking break wires to make this connection? Or do I have to buy the bypass?
I wired in a switch and hid it in the glovebox on an older crown Vic I had. Radio to switch, switch to a good grounded spot behind the dash. Done
chrslefty Well-Known Member

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Try just finding a good ground on the radio body.
khail19 Well-Known Member

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Khail

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You can't just ground the newer units anymore to bypass them. They need to either be hooked up correctly to the parking brake sensor, or bypassed with a relay. Many people use the PAC TR7 but there are plenty of other options as well.

https://www.amazon.com/PAC-TR-7-Uni...ocphy=1022653&hvtargid=pla-570556665097&psc=1https://www.amazon.com/Bypass-Navig...a-803602062419&psc=1&ref=&adgrpid=74356900697
chrslefty Well-Known Member

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Some do. Mine is only a year old and i grounded it to the radio chaise.
mwrohde Well-Known Member

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Pretty sure I ran mine to the e-brake switch. Why is that not working for you?
DrZ Well-Known Member

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Doesn't it depend on the stereo? Some might want to sense 12 volts to mean parking brake engaged, some want that to mean not engaged. You really need to check the instructions for the stereo and then look at the wiring diagram for the parking brake for your model.
bwyrock New Member

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Here is teh location of the e-brake wire in my 2009 double cab. Probably similar in other models. I spliced this wire and connected it to my Alpine ilx-407 and it worked like a charm.
Bivouac Well-Known Member

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Remains to be seen I bought the tires and wheels the rest came along

In most cases I am removing these fancy radios and going back to stock in my mid eighties vehicles.
I am curious why hook to the parking brake switch circuit.

Is this so the sound system can not be used unless the parking light switch is closed ?

As a means to say our radio was not the cause of the distracted driving ?
bwyrock New Member

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In my case, Setup menus, playing movies, and other things deemed distracting require the e-brake to be engaged to allow use. In addition, the newer head units have to see a change from no e-brake to e-brake so the signal is not just bypassed usually by grounding.
Bivouac Well-Known Member

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Remains to be seen I bought the tires and wheels the rest came along

Thanks I did indeed make a decent Guess
It still allows the system to play your just not not permitted to use involved functions while moving