My CB volume was low compared to all of the rest of the audio inputs (XM, FM, AM, Weather, iPOD).  I had to get a new CB unit with a newer flash on it to get the CB output level up the the same levels as the rest of the audio inputs. 

I had to jump through a lot of hoops to get this done.  My dealer didn't know what to do so I had to do the homework myself.  The dealer called Victory and Victory didn't get back to them with anything.  I ended up calling RadioSound directly to find out how to get CB volume up to the same levels as the rest of the system.  Please note the CB needs to be flashed to the proper version in addition to the radio head unit.

Sincerely,

Tim

P.S.

My buddy and I have been working on increasing the bike's ground plane and using a better antenna (Firestik Firefly) to get better CB performance (TX/RX).  These have been physical mods to the bike.  The CB headset volume is a CB flash issue. 

With the new flash, I am able to hear the CB fine with Big Honker Pipes at half volume.  Before the CB flash upgrade, I was pegged at 30 and could bearly hear the CB through the headsets.  My wife could not hear the CB at all through her headset until after the CB flash upgrade.

Just a thought.  You maybe able to route the headset speaker audio into the audio input of your GPS or AUX input to get the CB audio out to your external speakers.  If you route it though your GPS audio input, then it may cut out your music the same way that the GPS cuts out your music when it announces route information.

If you study the wiring diagram in the shop manual, you may be able to figure out how to do this.  I have traced the lines, but haven't tried this myself.  Since your driver's headset lines are already run up to the center console, it maybe as simple as tapping 3 lines (ground, left + and right +) and piping them into a stereo mini jack cable that you plug into the side of your GPS.

HTH,

Tim

Update:

Update:

I just looked at my bike and wiring diagram (see page 510 of the PDF file).  The harness that hooks up your GPS to the bike has 4 wires (switched hot,  ground, Nav Audio + and Nav Audio -).  Since there are only 2 audio wires, the NAV audio input is mono, not stereo.  Your headset speakers are stereo so you have 2 choices.  You can either take just the left or right signal into the Nav Audio to feed the mono input, or your can combine the headset left and right signals to feed the mono signal. 

You will need some 3 rectifier diodes to keep the hots from back-feeding and polluting the other signals.  You will need a diode for the left headset audio and another one for the right headset audio so when you combine the 2 channels, you do not get cross talk in your headset and do not send the mixed signal back to the source unit.  You will need another diode to keep the [combined] audio from your headset from being sent to your GPS. 

Since you already have diodes on the left and right headset lines, these will protect your headset from the GPS audio.  Rectifier diodes are about 10 cents each from PartsExpress.com (shipping will be more than the parts).  From the looking at the bike and the wiring diagrams, it looks like a couple of bucks worth of parts (few feet of wire, shink wrap, 3 rectifier diodes and wire connectors) will get you a wiring harness that will pipe audio from your headset speaker lines into the Nav audio input harness of the GPS.

You will need to set your head unit to enable external speakers and disable the entertainment mode so no music goes to your headset.  You now only want the CB audio to go to your headset so it will be a mono-pass-through to NAV input (you don't want to muck up your music by converting it to a mono signal and repiping it though this new circuit).

The next question is the headset speaker audio sufficient to drive and not overdrive the NAV audio input?  More homework is needed to safely answer this question.  If the input levels are ok, then you should be able send the CB audio out through your external speakers the same way the GPS uses the external speakers by muting the musing when either you recieve a CB RX or a GPS audio instruction.

HTH,