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Old 01-12-2013, 07:28 AM   #7
kimokk
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Joined: Nov 2009
Location: NOVA
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Quote:
Originally Posted by 9Dave View Post
So you know - the XM add-on is by a complete external radio. Check the Garmin site to make sure you are looking for one that is compatible with your 550.
Actually you just need an GXM-30 antenna that plugs into the zumo 550 cradle then follow the prompts on the screen to activate service. With service, you get XM radio, traffic alerts and weather updates/forecasts.
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