Background:
speedo was working yesterday on my way home from work. stopped at a round a bout then after that stopped working.

BEFORE SOME GENIUS SAYS CHECK THE SPEEDO CABLE.. IT DOESNT HAVE ONE AS ITS ELECTRONIC!!!!

checked plugs behind the cluster and still doesnt work

car:
2000 EM1

engine:
B16A2

cant find the speedo sensor as im not sure where it is and tried to google it and i cant find the location of it.

Help please......