HP 5065A Power Connector

Amphenol MS-3106A-18-22S socket with AN-3057-10 shell:

WARNING: not all 5065A use the same pin wiring. Here's a newer one (white=neutral=A, hot=black=B, ground=green=G):

Matching the newer schematic (showing pins B-G-A):

But here's the older schematic (showing pins C-B-A):

SO TAKE CARE: not all 5065A use the same pin wiring. Open your 5065A, check your wires, connector, and cable.