On the ole 81 380SL passenger side firewall, there is a gizmo there with 4 coolant hoses , a few wires, and a whole mess of vacuum hoses. Previous owner looks to have had trouble with it and bypassed it. The AC still works well. I picked up one from a 450sel, looks to be the same, have to check the PN on it but it had the same ac system(vertical buttons). I cut the vacuum hoses and wires a few inches prior to going into it to aid in hooking up the new one.

What does this do? Do the 20+ vacuum hoses connect to a plug so they dont have to swapped individually? Thanks