I just bought a 1998 Wellcraft 1860SS, 4.3L, Alpha One, and the speedo isn't working. The guy said it had worked in the past. I wanted to troubleshoot it and can't even find it. I was expecting it to be mounted on the hull at the back with a tube running back into the hull. There is nothing mounted on the back of this hull anywhere. It isn't incorporated into the outdrive, is it?