For this I used:
Soldering Iron with stand
First, collect solder with the iron, then deposit it onto a lead of a component.
Again, collect solder with the iron, then deposit it onto a wire. This is called "tinning" I have made a "tinned lead" on my switch, and a "tinned wire".
Lastly, I stacked my tinned wire onto my tinned lead and depressed the soldering iron down onto both. This make a little molten solder sandiwch.
Remove the iron and allow to cool.