As far as I know if you get it on and leave it on there will be no problems. Mine stays on weeks at a time and some say they have never turned theirs off. Have you checked the fuse? Mine is an 1800 so I don't know but I suspect that the ACC/Cruise Fuse is the same on all bikes. There are relays in there too. You really need a Shop Manual to troubleshoot any deeper or somebody who has a model like yours. I know this is a little crazy, but when riding the bike, can you push the cruise button and get the light on and then hold it down with one hand and hit the set button and will it then set the cruise? It takes several seconds (6 or so) for the cruise to actually catch and set. Maybe you could tape it down, turning the light on and then drive and see it the set button works.