hahnmgh63, do you have RNS-E in your headrests? I just noticed you have RNS-E listed twice in your signature. ha ha.

I have the older RNS-E and factory BT module with MFSW working well in my allroad. I'll get this sorted out in the RS6 and likely type up a document for future reference. I think nene's write-up is near complete but minus some harness mentions and also discussion on factory nav/satellite/onstar differences and signals conflicts with the assumed C5 PNP harness. Mention about GALA and tapping wiress behind cluster and why would be helpful also. I am hoping to retrofit a newer generation S-line/TT/S/RS flavor MFSW into the whole picture as time goes on. I am woking on that but research takes much longer since the newer generation airbags are 2 stage and ours are single stage (thanks to zawa for the direction on that). Safety first, then functionality.