OEM pins were Sumitomo. When Jeff still owned Z1Enterprises, he was researching replacement pins. Don't know what became of his efforts.
We gratefully acknowledge our German friend & legendary Z1 restorer Achim for his willingness to share the following info on re-using the OEM Sumitomo pins, and his explorations of alternative connectors.. We must also gratefully acknowledge kawasaki-z-classik for hosting the following images.
The notes are in German. Our German-fu is very weak. A translation service can be used for clarity.
Closeup of Sumitomo pin & socket removed. Pin is completely prepped for re-use. Socket is not; it still has to have the conductor crimp spread & copper strands removed. You'll see below that Achim recommends soldering the free ends of the new conductor strands to the (cleaned) pin body.
Achim's basic tool & supply setup. The 'aluminum block' is used to support the OEM pin in a vise without crushing it while the crimps are
formed* away from the insulation & conductor.
Removing the pin & prepping for re-use. Note how the 'aluminum block' is used.
Re-crimping & soldering. Achim shows both a ratcheting crimper and a pliers-type crimper being used. We far & away prefer a quality pliers-type crimper, Can't go wrong with the Japanese Engineer brand.
Sumitomo pin image & dimensions. Achim apparently didn't make a similar evaluation of Sumitomo sockets.
Comparison of Sumitomo & PMC pins & pin housings. We've not personally explored the PMC offerings at all.
Closeups.
Achim also explored Delphi Weather Pack pins & sockets.
The pins must be slightly modified to work in Sumitomo housings. No info on the sockets.
That's all the info we have.
* A good Technician never
bends
anything. If need be, it is
formed.
Good Ridin'
slmjim & Z1BEBE