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Thread: Did I fry my Garmin GPS18?

  1. #1
    Maximum Bitrate wysocki's Avatar
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    Did I fry my Garmin GPS18?

    Damn! I just hooked up my carPC and I think I blew it, literally. I got a Garmin GPS18 PC with serial connector and 12v cigarette lighter adapter. Thinking that the adapter was supplying 12v to the antenna, I cut it off and hard wired the GPS to my 12v line that the computer is fed from. It didn't work, obviously. Now, I'm rewiring the car to get 5v to the GPS (which is what the adapter converts to). But, I'm wondering, did I totally ruin the GPS or do I have a chance that it will still work?

  2. #2
    Raw Wave Rob Withey's Avatar
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    If you fed 12v into a 5v device, you almost certainly fried it.
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

  3. #3
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    The GPS 18 PC's cigarette lighter plug contains a voltage regulator that steps down from 12V automotive to 5 Vdc. If you remove the cigarette lighter plug from a GPS 18 PC, its voltage supply requirements change to 5 Vdc, rather than 12 V automotive.

    Sorry. 8(

    Bill.

  4. #4
    Constant Bitrate
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    do these gps auto turn on when supplied power? I'm thinking of getting one of these and hiding it under the dash.

  5. #5
    Maximum Bitrate wysocki's Avatar
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    The USB units get their power through USB connection. The serial units have a separate power line (usually to a cigarrette lighter connection).
    I don't know that I'd hide the antenna under the dash unless your dash is plastic and pretty thin. Although the "recommended" placement is on the roof, I've been able to get a decent signal from just under the speaker grille on my dashboard. I didn't get any signal through metal though.

  6. #6
    Constant Bitrate
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    It would be under less than 1/2 of plastic right near the top of the dash. plenty of sky. I'm sure it would get a great signal there, I just wanted to know that when Power came to it, it would be on, that there wasn't a switch on it.

  7. #7
    Constant Bitrate
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    btw, what did you pay for it and where did you get it from, seems like it can be found most places around $90, is that about what you paid for it?

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