It has nothing to do with the 1300.
Some kind of push on bullet connector.
I believe Yamaha had also used this Starter Relay.
Have a local dealership nearby, they may have some terminal connectors.
Measure the male pin with a micrometer if you have one Or take it with you to parts places.
You may want to cut a small piece of copper tubing and if too large cut the tubing wall and
compress to the correct size.