for what it's worth, this is what I've been using with my first generation Schmidt dynamo for a very long time (18 years??)
I use some Amphenol pins and sockets. Nice reliable parts, available at Digi-key with p/n's #889-1233-ND and #889-1232-ND. No reason that any other quality pins and sockets wouldn't work too.
I've got a 3rd generation Schmidt with a very similar arrangement, albeit with wires that blend in a bit better.
Steve in Peoria