I just finished a de-smog with a cruise control install on my I/S. I installed an Audiovox CSS100 cruise control but didn't use the standard Control panel. I really like the McCruise control panel but, for me, it's way too pricey. I decided to use a Pingel slimline dual button switch and my existing reservoir mount triple switch for the on/off function.
I really like that all the cruise control equipment and wiring voltage and signals are entirely in the fairing except for a single wire that goes to the nearest coil wire for speed sensing and the small vacuum tubing hose to the carbs.
I used three check valves teed together to feed the CSS100. The check valves are cheaply made so be sure to test them by blowing/sucking on them before you install them. I had one bad out of four.
All dip switches are the customary #1 and #7 on. The rest are off. The jumper is removed.
The wiring plan for integrating the Pingel switches is really simple. For anyone wanting to go down this path this is the wiring plan:
The CSS100 unit:Red and
Brown wires tied together and connected to switched 12V from reservoir switch.
Purple wire to front brake switch wire. (Yes, the rear brake also deactivates the cruise control.)
Blue wire to an ignition coil ground wire.
Green and
yellow wires to go Pingel switch.
Black wire to bike frame ground.
Grey/Black pair - remove and discard
The Pingel Switch:White wires both go to switched 12V from reservoir switch (same place as red & brown wires of CSS100.)
Red wire connects to
Green wire of CSS100
Black wire connects to
Yellow wire of CSS100
Buttons are an easy reach and work well with gloves on.
The lower button is Set/Decel.
The upper button is Resume/Accel.

I modified my triple switch so two switches work with the key off. The cruise button gets switched power
so I don't drain my battery if I leave the cruise control on while the bike is off.

Not a cheap switch but clean. I found it for $125. My only complaint (besides price) is the wire's a foot too short. It is just long enough to work though.
