If you have single CD there is a module you can use but it's a hundred bucks.
If you have a cd6 monsoon radio NO adapter will work. I ordered several different versions at work returned them all.
Tapping into the xm signal is the most cost effective and does not harm the receiver. Turning it to 0 is the hassle free way while the normal xm channels still work fine if you pay for the service.
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