Hello everybody. I am new to the forums as I just purchased a 2007 MCS. The forums so far have been a great help for doing my first couple mods. I have run into a snag though. I was intstalling the OEM Sirius kit under the front seat and see that there is only two connections on the unit itself (power/signal and antenna) but there are three wires in the bundle under the seat. I cannot for the life of me figure out what the third one is used for. Can anybody help. I have an appt to get the car reprogrammed tommorow morning and I would like to get the car buttoned back up before I take it in.

Thx,
Jim

 

I thought there were three: power, fiber optic data connections, and antenna. It's been a while since I did mine though so the power and the fiber optic might be bundled together, but I don't remember it that way.