Where is the High side service port on a '91 190E 2.6
 

Can't find the High side service port for the A/C!
Low side is same place as my '84 190D, and on that the High side is between the LH headlight and radiator... but not on the 2.6.
Its not on the inner fender like a 300E either....
My Haynes manual does not even cover the A/C system.... I feel silly for not being able to find it!
Help!

Ok.... Found it!
On the back of a pipe that comes out of the Compressor!
Invisble and unreachable from above.