Thanks again for your offer Tim it's really appreciated.  I have to say offers of help like Tim's and Graeme's plus other ones I have had from members of this forum in the past really is awesome.  Its a great community.

Does anyone know what size trifurcon female crimp terminal to get to fit the connectors on that board?  My understanding is it's 0.100.  Would these ones work, they are the only ones with a minimum wire size of 0.100:

https://au.rs-online.com/web/p/pcb-connector-contacts/8215449/

I gotta confess I am pretty ignorant on this whole aspect.  Whilst I have completely repinned every connector in a Gottlieb System 1 game before, I'm still a bit naive on the technical side of it.