Use wire cutters to clip the speaker wire to the length you need. The further apart your speaker and receiver will be, the more slack you’ll need to add.

This is the side you’ll attach to the banana plug with the red mark, and you’ll plug it into the red terminals on your speaker and receiver. It’s very important to pay attention to the polarity of the wire. Attaching the positive wire to the wrong terminal could damage your equipment, injure you, or start a fire.

Do not twist the cable so tightly that it kinks up. This could cause it to break.

Keep the soldering iron away from anything flammable, and do not touch it to your skin or any other part of your body. Only apply a small amount of solder on the very end of the wire. Don’t cover up too much of the copper, since it’s a better conductor than the solder. If you don’t want to solder the wire, twisting it is fine. However, if you move your speaker components around a lot, the wire could start to unravel eventually.

You can buy pairs of banana plugs at any store that sells speaker components. You can also find them online.

Set the plugs somewhere secure, like in a small dish, so they can’t roll away. If there are screws in the side of the plug, loosen them with a screwdriver.

The hole for the wire may be on the side or the bottom of the plug. If you’re not sure, check the packaging that came with your banana plugs Do not insert insulation into the hole, as this can prevent the plug from having a secure connection with the wire. If you didn’t strip away enough insulation, remove the wire from the plug and pull off a little more. If there is bare wire showing outside of the hole, cut the wire until it fits, or wrap the end of the plug with electrical tape.

Read the instructions that came with your plug if you’re not sure.

If there are any sparks or you hear sounds like a pop or sizzle, immediately turn off the power and double-check your work.