Tonight I wired the receptacle AMP connector for the rear Infinity stick grip and tested continuity and switch operation. With that done I can now install the reeptacle onto it's mounting bracket and rivet the bracket onto the seat rib under the main floor panel.
I have used 17-28 AMP Series 2 Circular Plastic Connectors (CPC), with cable boots. Here is a list of the parts I ordered from www.mouser.com for the receptacle side:-
