location of crankshaft position sensor on 1990 Audi 80 Quattro

Can anyone help me find the location of the crankshaft position sensor?

Asked by for the 1990 Audi 80 Quattro
it should be in the area the trans bolts to the engine on the upper drivers side. there are 2, one speed sensor, one reference (black and gray plugs) i thing the gray one is reference (position) sensor.