88 560sl fuel regulator??

[kennedy]

please excuse my stupid question, as I am just getting into the mechanics of my sl, but why does a line come from the low pressure side of the A/C to the fuel regulator(if thats what I am seeing)? I think its the fuel regulator, it sits on driver side next to the fuel distributer with one big line and one small line to the distributor.

[450slcya]

The AC line does double duty as a fuel cooler.