Our best snap-plug terminals for preventing wire pullout and loose connections. A combination of crimping and heating makes the wire extra rigid and secure. First, squeeze the barrel evenly and tightly onto the wire with a crimping tool so it stays put when tugged, vibrated, or under tension for long periods. When you apply heat, the plastic seals and grips the stranded wire while the enclosed solder melts it into a solid, rigid wire that's even tougher to twist or bend. With a round tab rather than a flat one, these are a space-saving alternative to quick-disconnect terminals.

Our best quick-disconnect terminals for preventing wire pullout and loose connections. A combination of crimping, heat shrink, and solder makes the wire extra rigid and secure. First, squeeze the barrel onto the wire so it stays put when tugged, vibrated, or under tension for long periods. (Use a crimping tool to avoid a damaged barrel and loose connection.) When you apply heat, the plastic seals and grips the stranded wire while the enclosed solder melts it into a solid, rigid wire that's even tougher to twist or bend. These terminals pair with other quick-disconnect terminals, so you can pop them apart whenever you need to break a connection.

Keep multiple sizes of our tightest-gripping butt splices on hand. After crimping your splice, apply a heat gun to shrink the plastic and grip wire securely under tension and vibration. The heat shrink also protects wire from the drips, dirt, and scuffs that lead to fraying, poor conductivity, and short circuits.

Connect and secure wire that's frequently pulled, jostled, or vibrated. Insert your exposed wire ends in the splice, then pass a heat gun or butane torch over the body. When heated, the enclosed solder melts around the wire for a stronger, more rigid connection than unsoldered wire.

Our tightest-holding connectors secure wire through heavy vibration and sharp tugs. Apply a heat gun or butane torch to shrink the insulation and firmly grip the wire. As the connector heats up, the enclosed solder melts around the wire for a stronger, more rigid connection than unsoldered wire.

Our strongest-gripping reducing butt splices hold wire securely through heavy vibration and sharp tugs. Also known as step-down splices, reducing splices join a larger wire and a smaller wire end to end. Colored stripes differentiate the larger and smaller openings so you don't have to measure and mark them yourself.