The bottom entry interconnect connector, 0.156", used on Williams System 3 through 7 driver boards. Limited supply as manufacturer has called End-Of-Life on these, so stock up a bit!
Williams part number 5A-9066 -8 Pin receptical - 2P1 - for 0.156 inch pins
5 of these will do a single Lamp/Solenoid/Switch driver board for System 3 up
PDF of connector