Quote Originally Posted by DaveSpiller View Post
The AAII-GM12 adapter definitely works with Monsoon system with XM. It put it in my 07 GXP this past weekend. It's about $40 from ebay and includes the jack and 1/8" cables! I was even able to install the audio input jack right inside the head unit... there's enough room (at least on my model) and pretty easy to get to it to drill the hole and install (just pull the head unit and pry off the bottom cover... you'll have plenty of room to put it in)
I have the same year and model car. I can only assume it's a monsoon system also. Can you give me a quick install walk thru? Was it as easy as plugging it in and drilling a hole for your port? Or was there soldering involved?

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