DESPERATELY need parts diagram of speedo sensor

[davis911s]

I still can't figure out my damn speedometer! I have two switches, both work and have been tested with a magnet. However when I do the in car test, no beeps. I think I am missing a piece that goes between the sensor and the transmission. Could someone PLEASE post a pic or link of this assy to put my mind at ease. Or start me on a new head ache!!

Thanks
Shawn