Welcome to PriusChat

We'd love to have you join our community and participate in the conversation! Sign up for FREE today.

Sign Up

Install GPS

Discussion in 'Gen II Prius Accessories & Modifications' started by mvo909, Apr 24, 2011.

Social Buttons

  1. mvo909

    mvo909 New Member

    Joined:
    Mar 8, 2011
    Messages:
    3
    Likes Received:
    0
    Location:
    Southern California
    Your Vehicle Year:
    2005 Prius
    Model:
    II
    Today I went to a place that was installing GPS for $70. They take your existing GPS and run the wire to an extra auxiliary plug in the back of your stereo. In short I do not have to plug into my cigarette lighter. Its a cleaner look and the GPS turns on and off with the car. I do not see any wires, but the GPS is still mounted to the windshield on driver side. My question is: will this drain my battery when the car is turned off. The person that installed it, assured me that it will not drain my battery when the car is off. I am taking his word for it, but wanted to get feedback to see if anyone else did this type of install or knows for sure that the aux plug in the back will not drain battery when something is connected to it.
  2. Corwyn

    Corwyn Energy Curmudgeon

    Joined:
    Mar 6, 2011
    Messages:
    2,117
    Likes Received:
    620
    Location:
    Maine
    Your Vehicle Year:
    2007 Prius
    Model:
    II
    If it is truly an AUX wire, the GPS will only be able to draw current when the car is in AUX, IG-ON or READY states.
  3. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    Messages:
    18,897
    Likes Received:
    3,824
    Location:
    Sacramento, CA.
    Your Vehicle Year:
    2013 Chevy Volt
    Model:
    N/A
    I don't know of any AUX plug in the back of the stereo.

    What they likely did was tap into the 12v ignition wire, 12v constant (battery) and ground wires. This will make the GPS turn off and on with the car. In some cases we would actually install another "cigarette lighter" power port behind the dash and plug in the GPS or XM Radio device's plug so that we didn't have to cut any wires.

    If they simply tapped into the stereo wires then there should be no drain on your battery when the car is turned off. If you cannot turn the unit on while the car is off then you are good to go.
  4. qmtran

    qmtran Junior Member

    Joined:
    Mar 12, 2009
    Messages:
    87
    Likes Received:
    6
    Location:
    Seattle, WA
    Your Vehicle Year:
    2009 Prius
    ^ What he said.
Similar Threads: Install
Forum Title Date
Gen II Prius Care, Maintenance and Troubleshooting Car Wont Start After Installing EV Mode Only Nov 16, 2014
Generation 1 Prius Discussion Just installed rebuilt HVb but MFD won't come on?? Nov 14, 2014
Gen II Prius Accessories & Modifications Anybody install a reverse sensor system? Nov 13, 2014
Gen III 2010+ Prius Accessories and Modifications Can you install two devices off the one mirror wire tap (Radar detector and dash cam)? Nov 13, 2014
Gen III 2010+ Prius Audio and Electronics Need advice on parts for installation of double din unit Nov 12, 2014