1997 S500 B13 Sender Location Please

[knarf]

Greetings Forum Members,

I recently purchased a 1996 S500 with a 1997 engine swap.
The temperature gauge is not working and I cannot
find where the B13 temperature gauge sender is located to check or replace it.
It is not on the top front of the intake manifold.
A 2 lead B11/4 sensor for engine management is in that location.
Information on the B13 sensor location for this engine would be most appreciated.

Thanks,
Knarf