The module is indeed under the spare tire, and if you have more than 3 cables in de white cd connector, you have to put these into the new icelink plug. These extra cables are for bluetooth and nav. If you skip these, no sound from you nav/bt is coming through. It is indeed quite a job to connect an icelink to a X5. I have done a few and it keeps me going for 2 hours each time. The cd connection link (also DICE) is much easier! However, in europe, we only have the icelink available.