Electrical Problem?

The burnt out plug on the wiring loom, what is it called and can I get a replacement?

 

Sorry I don't know what it is called but if you lookup your bike on
fowlersparts.co.uk site you can find the name and part number. Then decide if you can buy new or on ebay, national triumph on ebay etc.

 

I'm sure it's these...

 

That'll do the job

 

All sorted. New rectifier and "used" speedo fitted. The fuel gauge has a mind of its own, is it possible that this is fried also?
Thank you all so very much for your wise words.
Much love...