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Yes, you need to hook up using the antenna connector. If you choose the external aux connector, you must provide power too and it will be found in the radio harness.
Sorry, there was a problem. Please try again later.You just need to have access to the back of the radio and or the antenna (Depends on your specific vehicle and if it is a factory radio or aftermarket). There are many ways to install the XM Commander unit to interface with your car's radio. I recommend using Google to look for installation videos (That is how I found mine for a MK4 VW).
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