Another option is REAL cruise control. I had the BrakeAway for many years and it did everything I wanted it to, except keep speed during elevation changes. It wasn't a big deal when I was on solo trips, but riding in a group always kept me adjusting it to keep up. If you can find the AudioVox CCS-100 (usually through eBay), and seeing as we all have some extra time on our hands, it's worth the investment IMO. I do, however, miss the BrakeAway when I just need to quickly take my hand off the throttle to adjust/check something, but I can accomplish the same thing with the cruise for just a few seconds more before it's engaaged.
THE CCS100 IS BACK! YOU CAN GOOGLE THE CCS100 AND FIND TONS OF INSTALLATION INFORMATION BY OTHER USERS. Provides for relaxed highway travel at preset speeds. Avoid unintentional speeding and driving fatigue.www.ebay.com
This is the write-up I followed for the most part. I have an LED brake light, so I had to wire in an extra relay on the rear brake circuit to "trick" the system to turn off when the brakes are applied. And you do have to fab up some type of bracket for the control pad...my holder is a custom piece that was built in limited quantities many years ago.
the audiovox. units I installed a few hundred of them.. years ago.