hey guys need some help my speedo works only for the first 1/2 mile of my ride and then it stops, if i were to come to a stop for about 5 to 10 mins then it would work again only for the same amount of distance 1/2 mile and then no more... not sure what it is had it checked they said everything is ok, its not of course... i also swapped out the speedo itself with another used one and it did the same so i know its not that,,, then i lifted the sled and revved it and the cable moves when disconnected form the speedo... im stumped its like something is getting warm and then does not want to work anymore...any help is great

thanks

frank