Thanks for the input, Mack.
The way I set the system up, the phone was running off its own battery. I COULD
run the phone directly into the Baehr unit, either on battery or by adding another power supply to the bike's battery (I assume the 2.5 mm RCA output on the phone doesn't carry
power), but I would be giving up the zumo BT features (phone book transfer, large & legible
screen, ablity to dial waypoints stored in Zumo database, etc). Most important function
is sending/receiving calls (I have to be on-call alot), but I'd like to keep the Zumo features if possible......