After hooking up my datalogger today i see the speed sensor IS working. I guess its my instrument pannel. I took it out and the connections look clean. After puting it back in it seems to work better but not like it should. Any ideas? Anyone have the diagram for the IP plugs? that way i could test the signal, i believe the speed sensor gets 6v, but im not sure what kind of signal the speedo expects to see or how to test it. tia!