LOL i think you need the DSP adapter for sirius. Check ebay - integrated solutions (seller / store) has a lot of adapters.

here's the adapter i bought, ask the seller if they have anything for you. i assume that's what you need.

http://cgi.ebay.com/BMW-SIRIUS-ADAPT...sid=p1638.m118

other users might have more info with dsp.

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2005 LeMans Blue e53 4.8is
MODs
///LeMans Blue RBs///Intravee II///Sirius///ACS Spoiler///AiB v3///HID Fogs///LED Tails///
///215 20" Ferric Gray///MTEC Pedals///DVD Headrests///SMG M Wheel///AFE CAI Stage 2