I FINALLY figured out why my speedometer worked when I spun it but not in the car. When I had the gear ratio changed it included an adjuster that the speedo cable attached to. Apparently it broke and was spinning. It may have also rounded off the end of the cable. I took it off, put on my original cable and it works! Speed may not be accurate but now I can figure out how far off it is and get a good idea of my speed. Thanks to all who offered suggestions. Now on to the next problem.