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Thread: extract in-car (oem) GPS and share via bluetooth?

  1. #1
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    extract in-car (oem) GPS and share via bluetooth?

    Has anyone extracted the signals from an existing in-car OEM nav system and shared that out via bluetooth?

    I'd like to be able to use the existing in-vehicle nav system to provide GPS to a handheld (XV6800) cell phone. If only because I'd prefer to avoid adding another antenna and wiring it up to power. Granted, I'll have to wire up the bluetooth module, but that can be hidden and not require an antenna (at least not one that can see the sky).

    I'm guessing this would probably be handled by tapping into the CANbus as a serial device.

    Anyone done something like this?

    The setup is a Jeep REC nav system (alpine OEM) in a Grand Cherokee.

  2. #2
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    Quote Originally Posted by wkearney99 View Post
    Has anyone extracted the signals from an existing in-car OEM nav system and shared that out via bluetooth?

    I'd like to be able to use the existing in-vehicle nav system to provide GPS to a handheld (XV6800) cell phone. If only because I'd prefer to avoid adding another antenna and wiring it up to power. Granted, I'll have to wire up the bluetooth module, but that can be hidden and not require an antenna (at least not one that can see the sky).

    I'm guessing this would probably be handled by tapping into the CANbus as a serial device.

    Anyone done something like this?

    The setup is a Jeep REC nav system (alpine OEM) in a Grand Cherokee.
    just a guess here but I think most of those systems (alpine included) are based off of Windows Automotive and I think some sort of Middleware would have to be written in order to "steal the signal" its just not as simple as using bluetooth to extend the GPS to another device.

    Or if it is I apparently missed a few classes lol

    Zach

  3. #3
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    It's a guess, and it's wrong. The in-car system running the Jeep REC nav radio isn't one of them. If the signal is on the CANBUS then it's entirely possible that a CANBUS to serial bluetooth might be able to 'echo' the data. But the signals would have to be on the CANBUS to begin with. I don't know if they are or not for the radio in question. Thus asking...

  4. #4
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    Aug 2008
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    If your goal is to avoid another GPS antenna then there is the option of splitting the cable to the OEM unit. You will still need another GPS receiver that is BT, but at least you only have one antenna :-)
    I will be trying this out in the next week or so when I install my wiring harnesses into my Acura TL-S. The splitter is passive so I will loose some signal, but it only requires a resister, coil and a capacitor to make.

    Just a thought

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