I have a Honda "Big Red" three wheeler from the last year they were made. It has served me faithfully without mishap, except that the brakes have long ago worn out. About a week ago the little green light that shines when it"s in neutral started to remain off even when in neutral. After much key turning and gear shift rocking the light would come on. I cleaned the battery cables/post thinking it was not grounded good. No help. Now it refuses to light up. Of course the wheeler will NOT crank if the green light ain"t on. Is there a switch somewhere? The keyswitch maybe? Something that is worn or corroded?