De-Pin a headlight switch connector and selecting new pins
two types 1 with the lock tang one without
you need the male and female ones with tangs
EU and USA spade connectors follow the same sizing, notice that all sizes in MM include a fraction of a mm... i.e spade connectors designed to imperial sizes originally
and as with all of this stuff there are good quality and utter junk buy the mid cost ones and don't worry.
Terminals & Connectors > Non-insulated & Insulators - Blade - With Tags - Auto Electric Supplies Website