All good now.
The original BTUM unit itself was not fitting correctly into the connector and as a result, no audio signal. The dealership replaced the BTUM and verified that it was working correctly. It does indeed work correctly now, in fact, this has to rank up there with the absolutely COOLEST tech mods around. That is to say, coolest if you don't already have BT installed, have an old CPT9000 system and want an inexpensive and effective upgrade
Mike