Using these cold splice wire taps is a breeze. First, make sure you have 22 - 26 AWG solid core wires. Slide the wires into the plastic splice until they hit the metal teeth inside. When it comes to squeezing, use parallel - jaw or slip joint pliers. Needle - nose pliers won't work well, so stay away from them. You can also use a panavise for a more secure squeeze. For the wire - tap function, place one half of the splice over an existing 22 - 26 AWG solid - core wire and then insert another wire to tap into it. Remember, these splices are only somewhat weatherproof because of the silicone jelly inside, not waterproof. So, try to keep them away from heavy rain or long - term exposure to water. To maintain them, just keep them in a dry place in your drawer when not in use. This way, they'll be ready for your next electrical project.