I'm posting this message because I feel like my brain is going to explode. So much researching and I feel like I'm close, but want to verify that I'm not missing something. I'm building a carputer for my '05 Acura TL and I want to have the ability to preview/control the XM channels via my carputer.
What I'm thinking is the way to do this is take the signal from the TL XM unit in the trunk, build a cable like the beginning of this thread and bring it into my carputer's serial port and line in. From there, I send music out via line out, and with the P.I.E.x3 (or something else if someone has a better suggestion) connect it to the OEM headunit.
So the question I have is:
"Is it possible to do this with the OEM Acura TL XM reciever box, or do I have to purchase the XM direct unit?" If I have to purchase the XM direct unit, how does that work? Can I change my XM subscribtion from my TL box to the XM direct box?



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