Power port audio?

[53driver]

Have to use the audio connector in the cubby (cable plugs into connector under the left cubby) and plugs into the phone's audio output and is accessed via AUX on the bike's audio system. That the simplest option.

That's of course, assuming the bike had the 3.5mm audio jack accessory installed.
If you do NOT see such a jack in the left cubby, you'll have to pull the left cubby out and see if it's in the "spaghetti" underneath.
If you still do not see it, look at where your power port is plugged in....I 'think' in the same bundle is the "south" connector for the 3.5mm audio wire.
You'll need to procure the 3.5mm audio wire separately if it ain't there.....
Best of luck,
Steve