Speedometer Speed Sensor location??

[tomgtv]

My speedo quit working. Has come on intermittently, either works
after an engine start or doesn't. I think it's a dirty/faulty speed sensor.

Where is it??

I see one source says it's at the differential. Another seems to indicate
there are two on the transmission, front and back?

Any ideas, pics would be killer!!

Thanks in advance.

For a somewhat informative review of my service history, check out thread asking for advice on buying 02 X5 just below this one.