Hi all, After being informed that I can run my Nav CD from a multi-changer connected to my command unit, I purchased one and fitted it. It connected to the D2B fiber and 3 pin plug from the command unit's harness with ease. On power up the multi-changer kicked to life and the command see's it on the D2B bus and plays CD's without a problem. :bannana: However, when I put the Nav CD into the multi-changer (the reason why I got it), the command unit does not find it! I am reverted back to using it in the slot within the command unit. I have looked through the vehicle & command manual's and found no reference to using a multi-changer with a Nav CD. Can anyone confirm if it is possible to use your Nav CD this way? Or does the vehicle require the multi-changer to be coded to it by a MB stealership using STAR for this to work? Thanks in advance Sky..