1993 Honda GL 1500 SE Gold Wing "speed light overdrive" Questions

...speed sensor solenoid on the rear end overdrive light flashes will not go into overdrive? I have cleaned the connectors and replacing speed solenoid sensor on the rear end. What do I need to check? ...

...light is overdrive indicator with that 6 speed transmission five of those gearsare mainly for up and down shifting depending on road applications the 6th gear is your highway gear it's designed to ...

...light is just a bulb that indicates the trans is in 5th gear. The cruise is a different story. I need to know if the cruise won't turn on at all or will it just not "set" at a particular