If you can’t disconnect the power, do not attempt to splice the wire or else you could get electrocuted.

Wire strippers can be bought at your local hardware store. If you are using uninsulated wire, you can skip this step.

You don’t need to use shrink tube if you’re splicing with a wire cap. Shrink tube can be purchased in the electrical department of your local hardware store.

There’s a spring inside a wire cap, so as you spin it, it will get tighter and tighter around the wire. [7] X Expert Source Jesse KuhlmanMaster Electrician Expert Interview. 29 April 2020. Wire caps can be purchased from your local home improvement or hardware store. Strip off more insulation if you need to keep twisting the wire.

If you’re working on multiple wiring projects, use different colors of electric tape to mark which wires are connected.

Butt splices can be bought at your local hardware store in the electrical department. This method is a good way to connect thicker wires securely. [10] X Expert Source Jesse KuhlmanMaster Electrician Expert Interview. 29 April 2020.

Don’t use a hole that’s too small or else you may cut through your wire. Many wire strippers have a crimper built into them so you don’t have to get multiple tools.

Some butt splices are see-through in the center so you can tell when the wires are touching one another.

If you forgot to use shrink tube before you spliced your wires, you can wrap the entire splice and any exposed wires with electrical tape.

If you don’t have access to a heat gun, you can use a small torch or a lighter to heat the tubing. Don’t let the flame touch the wire or tubing so it doesn’t melt.

Use needle-nose pliers if you have trouble coiling the wire with your fingers.

Avoid touching the end of your soldering iron with your bare hands or else you’ll get burned. Line your work surface with a paper towel or scrap wood to protect against any accidental drips.

Wrap electrical tape around the coils if you don’t have any shrink tube.

Use a lighter or torch to heat the tube if you don’t have a heat gun.