De-Pin a headlight switch connector

take a snapped hacksaw blade
grind 1 inch length of the tooth side down until you end up with a strip that is the width of the hole in the connector. trim length if necessary to get the right amount of pry/press/twist to ping back the tang
press the none ground end with the blade mounting pin in it into a handle made of epoxy putty or cork or hey.. drill a split bit of dowel and bolt it on to the blade. you only need to make this tool once..... with a handle on it, it looks less like scrap and you won't stick it in the scrap bin

push the thin end down the key slot in the connector and push or pull out the spade or spade receiver.

raise the tangs on the new connectors
check then crimp. the spade type you have is the easiest to deal with, they are rear loading, crimp and load into plastic carrier

pull or push connector back into place, until the tang pings into place