How to Solder a wire onto a switch when building circuits
This is an instructional video featuring Doug Prime, founder of the Future Engineers Center at the University of Massachusetts Lowell. Strip the wire and make sure the wire is tied on tightly before soldering. Don't drip balls of solder. Make sure the tip is clean. Then hold it on the joint to be soldered for 4 seconds. Then poke the solder on the surface and it will melt with the heat.