It's been awhile but I can give you a pretty good overview....
This is how I did it, there will be a thousand others Im sure...
1. Pull the gas tank, seat and tail section.
2. Put the vacuum canister on the right side of the bike in the tail section in the light pod
3. Put the servo on the left side of the bike in the tail section in the light pod.
4. I used the 1st cylinder on the right side to connect the cruise to.
5. Mount the control head on the dash somewhere. Remember they are not water proof so try and get it under the windscreen.
6. There is a bolt hole on the frame on the left side of the bike, use this to mount the linkage adjustment bracket.
7. You connect the servo to the left side of the bike because the pull is on that side.
8. I used the L bracket and connced it to the factory linkage on the left, there is a screw you can take out to connect the bracket to.
9. install the vacuum canister and run a jumper vacuum hose from the servo to the canister, I ran it way back in the back of the storage area...
10. T Into a vacuum line and run it back to the vacuum canister, remember you can connect the vacuum up backwards.
11. You must install a relay that basically breaks ground so that you when you hit the brake the cruise shuts off. If you connect the cruise like the manual says and don't put a relay or a load resistor then the cruise will not shut off when you hit the brakes. The reason this has to be done is because of the low voltage pull on a Gen II with the LED lighs...
On the tail you will have to grind a little to get a good fit.