Here are some sources for vintage electrical connectors of all sizes and types. Call them, for more assistance.
http://www.easternbeaver.com/Main/Elec__Products/Connectors/connectors.html (http://www.easternbeaver.com/Main/Elec__Products/Connectors/connectors.html)
http://www.cycleterminal.com/index.html (http://www.cycleterminal.com/index.html)
http://vintageconnections.com/ (http://vintageconnections.com/)
http://www.oregonmotorcycleparts.com/connectors.html (http://www.oregonmotorcycleparts.com/connectors.html)
http://www.electrosport.com/accessories/connectors-and-wiring.html (http://www.electrosport.com/accessories/connectors-and-wiring.html)
Cheers,
Red