Adding XM radio to a non-Xm vehicle
Anyone who has done this before please chime in!




Go in trunk and try and peek in the passenger side trunk lid arm "hole" - if you see some orange cables etc you're prewired. See pics in attached pdfs.
Then, buy a SAT tuner/receiver, I got mine for $42 shipped https://www.ebay.com/itm/OEM-Mercede...72.m2749.l2649
You can buy the bracket for the tuner or DIY it. Usually people sell bracket for same cost as the tuner itself... I just used zip ties to hold it in place
Then, you need to buy an antennae for the tuner/receiver, I just bought a siriusXM one on eBay/Amazon for $15. instead of running it to the factory trunk lid location (ugly) I put mine in the rear decklid under the glass, there is a slit in the decklid to push the wire through. Reception is OK but cuts out in heavy wooded areas or very cloudy days (similar to other SAT tuners of the era - not great). I pick up 6-9 Satellites on the average day.
There are DIYs on the forums here if you run a search, but it is pretty straightforward. Most difficult part is adding in the "loop" on the MOST -- this is the part you need to be flexible for!
See the attached docs, sent to me by another forum user - hope they help. Let me know if you have any questions.
See attached pdfs
Last edited by jbaker1121; Sep 5, 2019 at 03:15 PM.
Go in trunk and try and peek in the passenger side trunk lid arm "hole" - if you see some orange cables etc you're prewired. See pics in attached pdfs.
Then, buy a SAT tuner/receiver, I got mine for $42 shipped https://www.ebay.com/itm/OEM-Mercede...72.m2749.l2649
You can buy the bracket for the tuner or DIY it. Usually people sell bracket for same cost as the tuner itself... I just used zip ties to hold it in place
Then, you need to buy an antennae for the tuner/receiver, I just bought a siriusXM one on eBay/Amazon for $15. instead of running it to the factory trunk lid location (ugly) I put mine in the rear decklid under the glass, there is a slit in the decklid to push the wire through. Reception is OK but cuts out in heavy wooded areas or very cloudy days (similar to other SAT tuners of the era - not great). I pick up 6-9 Satellites on the average day.
There are DIYs on the forums here if you run a search, but it is pretty straightforward. Most difficult part is adding in the "loop" on the MOST -- this is the part you need to be flexible for!
See the attached docs, sent to me by another forum user - hope they help. Let me know if you have any questions.
See attached pdfs
The hardest part for me ironically was getting the fiber optic connectors open because I was doing it wrong.
If you did not buy a mount/bracket, you can either make your own, or zip tie the unit to the area near where it plugs in, like I did.
For running the antenna, there is a small slit in the rubber gasket between rear shelf and trunk area where you can slip the antenna cable through (from inside the cabin to trunk), then run the antenna cable under trunk area to right of trunk where the SAT unit plugs in.I used some electrical tape to hold the wire in place, and some velcro on the bottom of the antenna to hold it against the shelf liner.
Again, reception isn't 100% in that location, especially in the woods and when very cloudy, but I still pick up 6-9 satellites, but probably not that much worse than factory location anyway.
Let me know if you have any questions.
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