A trip into town by bus, hoping to sort out a phone problem, led to discovering a large Canadian Tire store... Browsing their Auto dept, I found lots of items good for the boat - useful that cars and boats share a 12V system...
Back to finish off the rewiring project with some useful connectors I found there.
Still haven't found the elechronic cleaner for corroded connections that I'm looking for, to use on the mast top wind transducer connection.