On a friends I/S we mounted the vac tube under the airbox, as in the shop talk instructions. The servo unit is mounted in the fairing. With tank off and left side part of the inner fairing off, there is a little rubber flap, behind the handle bar risers. It will fit right up there. set your dip switches 1st tho. Then wrap the servo unit with something to make it not rattle. Like bubble wrap. If you need to re-adjust the switches later on, just remove one of the inner fairing pcs. Plenty of room in the fairing.
