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My dash illuminated backlight has gone out.  I’ve seen some discussion on this issue but I’m seeking more information.  This seems like a daunting task just to even get to the inside of the dash where it’s located.  Does anyone have a detailed description of how they have removed the dash housing and then fixed this issue?

I am 67 years old and own a 2009 Grandvista 250 .Today I rode a 2017 Honda Rebel 300 thinking it would be a nice step up with it having fuel injection ,nice low seat , 6 speeds and only 600 miles on it.   Maybe I've gotten lazy,  but I fell back n love with my Grandvista after upshifting and down shifting on the Honda Rebel.  I felt the Rebel was a good quality bike , but I also felt I had to pay more attention to the gear position I was in than actually enjoying the ride.   I now really appreciate just starting my scooter up twisting the throttle and accelerating down the road and when it it's time to stop I grab the hand brakes and I stop wth no other extra moves.  All I have to do is twist the throttle and the CVT takes me up to speed in seconds without interruption.   I also have tons of storage under the seat, something the Rebel simply did not have!  I do have a love of motorcycles,  but after riding scooters for years now I'm enjoying the simpler ride my scooter provides.  I just want to say make sure you are actually enjoying your two wheel ride whatever it may be. 

I had the same problem a few weeks ago on my 09 GV with only 1400 miles on it .  I actually started it to take it out and then turned the key to the off position and the starter kept running .  I tried to shut it down using the kill switch , then tried using the kick stand down but starter kept running on its own.   I figured I would go ahead with the ride and just keep the scoot running and see if it would correct itself.  Along the ride I stopped a few times to see if it would shut down without the starter running on it's own but the issue still remained.   I continued to think thank as long as I kept riding I would be okay until I got home and if need be I could pull the battery cables until I figured things out.  BAD idea!  Iwas in the middle of a state park when everything shut down .   There was no power to anything.   I did not have the tools along to pull things apart so I ended up getting a roll back to take us home .    The next day I researched the forum etc.  and a number of people said they had a stuck starter button or they put in a new starter relay or even a new battery.  I took out the battery as I suspected it was dead and put in a battery from my other scooter which I knew was good. I took the battery to the auto parts store to see if it still could hold a charge which it couldn't.  I ascertained that there was current being sucked out from somewhere ,  enough to kill the battery.  I then started with looking at the starter button inside the casing and after inspection and moving the button it appeared to okay ,  re attached everything and touched the cable to the battery again and the starter still came on with the key still in the off position.  I found the starter relay and disconnected the wires from it , removed it from the rubber boot it sits in and took the nuts that holds the cables from the battery off and then reattached the the wires and touched the cable to the battery again and to my amazement and delight the starter remained off until I turned the key to on and hit the start button.  So I put everything back in it's place and it has been fine ever since.  From other threads I was reading it seems that the relay is very sensitive to being grounded properly  and the right current going through it.   I have since then been taking short rides near home and using my iPhone plugged into the charging socket under the seat to check if it is giving a positive charge as I rode along,  which it has been so far.   I must say if it was not for the researching the forum I wouldn't have known where to start to fix the problem! 

Thanks mrbios for the info.
OK , I took the carb off once again and I drilled out the brass plug and ran a thin wire (very thin wire ) through to where I could see it in the pilot jet hole along with spraying with carb cleaner so hopefully this will clear the idle circuit as you showed in your video .  One question though ,   What is the charcoal canister purging that I saw on the close up of the carb openings in video 3 ?  Is this something I need to do or just clean everything out with the cleaner and then blow it all out with compressed air?     

I decided to reduce the hump by using a heat gun on the underlying plastic seat structure.   After heating to soften the hard plastic I cut some of the round flange I assume is for the helmet storage area by the hump and then kept heating the hump area until soft again and again then pushing from the top side to create a flatter  area were the hump was.  The soft foam  and the seat cover are still the same,  but the hard hump is all but gone.  I've taken the scoot for a ride after the modify and it made a world of difference.   I'm going to ride the scoot for awhile before I decide whether or not to modify the foam part as it is soft and doesn't bother me yet.     

 Update:   Since I last posted I put seafoam in my gas tank and adjusted the manual choke that i installed as I rode in hopes that the idle mixture circuit would clear up eventually.  So today I went for a long run and when I got back I pushed the choke all the way in to see if it would idle and not stall out.   To my surprise it kept running at idle while just sitting on the stand,  so I'm thinking it is at least starting to clear up.    Kinda made my day .

When I tried to pull the bystarter out it was past the O ring so the only thing that was stuck was the plunger.   I did do the test when I had the carb off with the by starter attached  hooked up to the battery with the blow test after warmed up ( the bystarter actually gets hot) and also after it cooled down and that test worked.  Did not check with ohm meter , not sure if I have the correct meter to do that test.  I do have a manual.