Valentine 1 permanently mounted inside fairing above right side ram air tube. I built a bracket from strap alumnium and fasten to it with combination of velcro between V1 and air tube and cable tie around V1 and the bracket. It "sees" through the plastic just above the turn indicator housing. Works great. Indicates front, side and rear signals. Valentine said unit sees through plastic with no problem, but warned that it must be mounted horizontally.
Wired to the taillight wire with a T-tap and no voltage problems since I did that. Key turns it on and off. Remote power unit and remote audio unit are in the storage area under the passenger seat. Never have to touch them.
The remote visual unit is heavy-duty velcroed into the dip on top of the instrument panel and now that I have a Zero Gravity sport touring windscreen, it's always visible.
A mini-jack audio extension cord leads under rider seat and exits from front edge, against the tank bra so no scratches. A Radio Shack earphone tucked under the padding of my Arai helmet puts the audio right where I need it.
All that and hardly ever speeding have kept me ticket-free so far. Er, maybe there's been a lot of good luck in that equation, too.