1. Incandescents were used for over a century. They were inexpensive, produced warm, soft light, lasted up to 1000 hours, and lost over 90% of their energy to heat.
2. Thirty years ago, compact fluorescents or CFLs came on the market. They cost more than incandescents, come in odd shapes, last up to 8000 hours, light up slowly, and produce bluish light; because they contain mercury, they must be disposed of carefully.
3. Newest light bulbs are Light Emitting Diodes or LEDs. Light is warm like incandescents, but they use 85% less energy and can last up to 50,000 hours. Prices are comparable to CFLs. They are round like incandescents and fit standard sockets.
4. To rewire a lamp, feed new cord through the base, tying a knot in it so it won’t pull all the way through.
5. Strip ends and attach to new socket.
6. Snap quick-clamp plug on end of cord.