Re: How to solder little stuff?
I used those exact switches and I originally sldered the wires....good thing they come in a bag with many.
I ended up using female spade terminals that solder on the wires, but are held onto the pins by tension like those below. Just use the smallest ones you can find. Even those a a tad bigger then they need to be, but mine work well and have not come loose. The advantage is being able to install the switch (screw in) and the pushing on the wires. I used heat shrink tubbing on each spade right up to the end and placed them on the pins so that the flat side of the spade faces to the the middle so they will noy touch each other. It's tough to see in the pic, but maybe you can get the idea.