Wish I had a picture...
I ran a Chatterbox for years. I simply, very simply, ran the cable under the plastic by the battery, under the front of the tank, back out on the left side of the tank and had it laying low on the left side of the tank along the bodywork.. You could tuck the jack into the bodywork there and it stayed fine. I ran my Chatterbox mainly as an amplifier for my radio or ipod. Never any ignition or other random noise, thogh it would pick up my cellphone searching for a signal once in a while.
As a side note, the guy at Chatterbox said that the power cord would only prolong the discharge and that I would have to eventually charge the Chatterbox from the wall. What I found was that I could run it indefinitely from the bike power cord, and it would even slowly charge the battery. I don't know what that guy was riding.
I just recently stopped using my Chatterbox as the battery finally wouldn't accept a charge, after about 5 years of very regular use. I moved the cable back up and out of there since I wasn't using it anymore.
paul from Minnesota