my speedometer is not working!!!!!!!!HELP

[slidinsidewayz240]

I just completed a 5 speed swap on my 91 hatch and now my speedometer is not working, someone told me it probably was the vss sensor or wiring but im not sure what that is or where it is located, the only wiring i did on the car was to get it to start.

If anyone knows how to do the wiring on a 5 speed swap with more detail post a link to it or tell me how( i don't want to start cutting into my wiring with out know for sure what im doing, believe me i have tried looking)