My Sirius receiver was bad which is why it was stuck on channel 205. I sent it back and had it exchanged and the new one works fine. I did try it on my old D3 and it did the same thing.
BTW, the yellow wire is constant power to retain the channel memory settings in the Sirius unit. It will not kill your battery by hooking it up to positive unless you don't drive your car for about a year or so.