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Thread: How to simulate "Reverse" on workbench

  1. #1
    Variable Bitrate JasonMK's Avatar
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    Annapolis, MD
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    How to simulate "Reverse" on workbench

    I've got my carputer powered up on my work bench, but I need to figure out how to simulate the car being put in reverse (to activate the hardware controlled rearview camera). Sounds like I need 12V to that wire, but I wanted some expert recomendations before I connect any hot wires.

    (Before posting I searched the forums and this was the closest I found, but still not discussing how to do it out of the car)
    _______________________________________________
    All installed, and ready for visitors. Infill G4 in a 2007 Saturn VUE

  2. #2
    Newbie
    Join Date
    Feb 2007
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    32
    Indeed

    In the same situation with Eonon screen. With nothing in the manual I first connected the ground with no response, then bit the bullet and connected the +12 to the trigger wire.

    Happy to say the effect was switching to AV2 instead of a fried unit!

    I don't advise trying unless you can accept the risk..


  3. #3
    Variable Bitrate JasonMK's Avatar
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    Jun 2007
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    Don't want to fry anything. I've got one wire labeled "reverse" and no seperate ground wire (assume it just grounds from the main ground?) Here's the wiring harness breakdown from the manual: from that I assume I can connect it to a 12v coming off of the desktop power supply just as I did to ower up the carputer on the work bench. If i connect/disconnect (manually or with a switch) it should activate and deactivate the rearview camera.

    Green/Black - Rear Left Negative
    Speaker lead
    Green - Rear Left Positive Speaker
    lead
    White/Black - Front Left Negative
    Speaker lead
    White - Front Left Positive Speaker
    lead
    Purple/Black - Rear Right Negative
    Speaker lead
    Purple - Rear Right Positive Speaker
    lead
    Gray/Black - Front Right Negative
    Speaker lead
    Gray - Front Right Positive Speaker
    lead
    Light Green - Reverse Gear
    Detection lead. This lead must be
    connected for the G4 to switch
    automatically to view the rear view
    camera. This lead needs to see
    +12v.

    Orange/White - Illumination lead.
    Wire this lead up to the illumination
    wire on the car. This wire needs to
    see +12 volts when the parking
    lights of the car are activated.
    Pink – Attenuator. This will cause
    the radio to mute when the cell
    phone rings when used in
    conjunction with a cell phone kit.
    Currently this feature is nonfunctional.
    Brown - Remocom - This is for
    steering wheel control. An adapter
    for the particular vehicle might be
    needed. Currently this feature is
    non-functional.
    Blue - Antenna Turn On. If the
    vehicle has a powered antenna (an
    antenna that is motorized), this lead
    will need to be hooked up. It will
    cause the antenna in the car to
    extend and retract when the radio is
    accessed.
    Light Blue - Hand Brake. This lead
    needs to be wired up as a safety
    feature. It will sense when the hand
    brake is applied and will cause
    certain features of the software to be
    enabled when engaged.
    Blue/White - Amplifier Turn On. This
    lead is used to sent the remote turn
    on signal to your amplifiers if you are
    running any.
    Red – Accessory. This wire must be
    connected to an accessory wire
    within the vehicle. This wire senses
    when the ignition is turned on and
    will cause a turn on and turn off
    signal to be sent to the G4.
    Yellow – Power. This wire must be
    connected to the battery in the car.
    Do NOT splice this wire into a wire of
    a smaller gauge. Doing so will risk
    the unit not operating properly and
    could cause an electrical fire. If the
    wire in the factory harness is the
    EXACT same gauge as the wire on
    the G4 harness, splicing into it will
    suffice.
    Black – Ground. This wire must be
    connected to the battery in the car.
    Do NOT splice this wire into a wire of
    a smaller gauge. Doing so will risk
    the unit not operating properly and
    could cause an electrical fire. If the
    wire in the factory harness is the
    EXACT same gauge as the wire on
    the G4 harness, splicing into it will
    suffice.
    _______________________________________________
    All installed, and ready for visitors. Infill G4 in a 2007 Saturn VUE

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