Dang that was quick. Winner!
Here's more pics and the wiring schematic needed plus a bit on how it works.
The Venture cruise brain normally has power to it and the vacuum pump at all times. The Ventures use a double pole switch set for the clutch and brake switches along with a cancel switch. I have eliminated the cancel switch from the circuit along with the indicators for the resume and coast. Since the Vmax only has a single pole switch I have tied into the switches using 2 normally closed relays (about the only non yamaha part not counting the upper cables). So, when you either hit the brakes or pull the clutch in it will cut off the cruise by cutting off the power to it. So, pretty much just like your car.
The beauty of this is it allows us to keep the vmax switch housings. I will have to relocate the reserve switch and add in a button to turn on the cruise as well as add the indicator to show when it's on (which is seen in the vmax gauge cluster pictured earlier). Have to order the custom cables which are the same as Vmax cables but with large ferrules on the junction box end (these are normally very tiny on the vmax junction). The lower cables appear that they will work as is.
We will have to locate the vacuum pump, vacuum actuator, control unit, and relays. I think some of this will fit above/below the stock TCI box and the pump and probably actuator may have to go into the airbox. The pump may fit over the front valve cover though and will be checked to see.
Since the reserve will be not as visible by looking at the switch position as easily as it was in the stock location, I am going to add another circuit to it. This will do a force on of the low fuel light when it's in the reserve position. So, when you run low on fuel it will work normally. Switch it over and go. BUT, if left in the reserve position the light will stay on regardless of the fuel level. This way you won't forget to turn it back to the normal position since the light will be kept on until it's switched back (and has enough fuel).
Sean