Two biggest things to go wrong are :I never had cruise control before so didn't really miss not having it but a few times this summer I thought it might have been convenient.
I don't know if it worked on the bike when I got it, never tried it, but at least since I replaced the grips, throttle specifically, last winter I know that the Resume/Set switch fails to engage or even illuminate the light.
So far I've disassembled the Right handlebar assembly and nothing readily obvious jumped out at me as disconnected, crimped or broken. I've since printed the section of my manual pertaining to trouble shooting and will start looking into it further this weekend/winter.
From what I can see about the fuses the brakes and cruise share the same fuse so without looking right away I'm guessing it should be good since I have brake (lights)?
BTW, the on/off switch and light appear to work fine.
1) Brake light switch is stuck on. Look to see if light is on.
2) "roll off switch" is bad or stuck/corroded . On right side of tank, in the front next to neck, two wires on the roll off cable, unplug them both . Then see if cruse control will go on . ( set at speed)