I see this post is about 6 months old, did you figure it out? I'll be installing a TomTomRider5 tomorrow, and will be trying to use these bullet connectors for power to it with ignition or ACC on and off when key is off.
I installed this cable and connected it to a Garmin Zumo 390 (not listed as the right model for this cable by Kawasaki). I had to run an extension from inside the fairing to my GPS.
This is not a normal audio connection. It works more like an audio over-ride. You listen to music source (I usually listen to an iPod via the Kawasaki connector) and when there is sound from the GPS (like a turn request or warning) it quiets the music and allows the GPS to be heard via the bike's fairing speakers.
Here's a link to the install instructions (hardest part was finding the wire connectors from the bike).
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