Use push-in connectors which are spring loaded to hold each end of the wire in place. You just insert a bare end of wire and you're connected.

For heat-shrink connectors, use a crimper such as the Ancor single-crimp ratchet hand tool (No. 703010) with four oval-shaped cavities for different wire sizes. Read Next: More DIY Projects Finally, ...

Banana plugs are a simple yet incredibly useful tool for connecting speaker wires to audio equipment. These connectors are designed to fit securely into the binding posts on speakers and ...