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GPS won't drive speaker


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mudbug 
Member - Posts: 2
Member spacespace
Joined: November 15, 2016
Location: South Carolina, United States
Posted: November 15, 2016 at 3:21 PM / IP Logged Link to Post Post Reply Quote mudbug
Hello,
I'm new here, a retired electrician and don't know much about 12v audio or other electronics. I am having a problem which will probably sound dumb or simple to you but it's got me pulling what little hair I have left out.
I bought a Rand McNally model RVND7735 GPS for my RV. The internal speaker is not loud enough such that I can hear it good while driving. There is an output connector they say is for an external speaker that will drive a set of earbuds or work as aux input to RV dash stereo. Not supposed to drive with earbuds and rather listen to tunes on the stereo so I bought a battery powered external speaker. It's a G-Project G10, 5vdc 500mA and my I-phone drives it fine but the GPS won't drive it and I don't understand why. What to try next to get more audio out of the GPS? Rand McNally is not helpful at all.
Thanks,
Mud
Mud
i am an idiot 
Platinum - Posts: 13,491
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: November 15, 2016 at 7:59 PM / IP Logged Link to Post Post Reply Quote i am an idiot
Are you using a 3 conductor plug to plug into the gps?    If so you need to try and use a 2 conductor plug. How many black rings are on the plug? 1 or 2? 1 ring - a 2 conductor. 2 rings = 3 conductor
mudbug 
Member - Posts: 2
Member spacespace
Joined: November 15, 2016
Location: South Carolina, United States
Posted: November 15, 2016 at 10:52 PM / IP Logged Link to Post Post Reply Quote mudbug
The plugin is 3 wire. I'll get a 2 wire one. The cord is built into the external speaker I have, is there such thing as an adapter.
Thanks for your help!
Mud

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