Hello,
I was reading about your install of the powerbar and it looks great. I have a CVO 07 Ultra and want to do the same but had a few questions.
You ran the wiring/cables inside the handlebars right? I replaced my bars w/ SS reach bars so they aren't stock. Would I need to drill holes? If so, did you drill them directly under the pwrbar or just adjacent?
You added a device to the bottom of the pwrbar and secured it w/ p clamps (a radio shack device) Not certain what that's for, can you explain?
Thanks very much.
I changed my bars also.
The wires are inside my bars. A little more work but a nicer look.
Although, If you want, you can group them with your existing exposed wires under the bars.
My bars have a slot underneath at the top of the grip...the wires slid right in the slot.
I did not need to drill.
The added device is a gold double female adapter covered in shrink wrap and is held in place with the P clamps.
Radio Shack 274-886 Gold Plated female-female 1/8” coupler $11.00

The connecting cable (on left) in the pic above is easily and quickly removed from the coupler
Long wires from inside handlebars to one side
Short wires from Zumo to the other side
I covered the adapters in shrink wrap and to camouflage it all a little I painted the P clamps black.
I now have two 274-886 couplers under the Powerbar and two wires in the bars + power.
One for Audio (MP3 etc.)
One for MIC (works for bluetooth to regular stock HD/J&M headset)
This allows me to disconnect the two short wires AND using the Techmount quick change adapter
I can remove the Zumo and the entire Zumo bike mount in about 5 seconds.
(see pics below)
I can then lock it all up for safe keeping.
The Zumo bike cradle cost 80+ bucks!
Don't ask me how I know...(SIGH)
I'm using the BOMM for Bluetooth with my stock helmet headset...it works GREAT!

I know, it's kinda hard to see with the speaker grill in the picture background.
Look at the top pic. Can you see the right connected cables at the Powerbar?

The wires on left side of Zumo plug into the couplers on the bottom right hand side. (1st pic)

On the bottom pic...Can see the short cables missing on the Powerbar on the bottom right?
Hope this helps...
Ride Safe...Be Safe.