So Steve you want your android phone to play music and interupt for gps commands from the handlebars. And be able to change songs via handlebar switch.

While the usb cable connector in the left saddlebag is our best option because it supplies power and return audio signals and can be controlled by the left handlebar switch. There are plenty of alternatives. If your phone is right there at the left handlebar whats the use of the handlebar switch then? You can use power from the left cubby to power your andriod and you can use the earplug in the left cubby to hear audio.

of course if you don't want 2 cables running out of your left cubby then use a BT receiver in the cubby to pair up with your Android and plug the BT receiver into the ear phone jack already in the left cubby.