How to Crimp Molex Connectors

Crimping Molex connectors is critical when making new wire harnesses, ensuring that the proper wire terminations are made in the connector. Making these terminations is necessary when creating custom harnesses, or when replacing old or worn wires in an old harness. Connecting wires into these specialized connectors requires specific crimping techniques to ensure that the wire seats correctly and the connector fits into the Molex harness as intended.

• 1

  Cut the wire to the desired length using the wire snips.

• 2

  Strip 1/2 inch of insulation from the end of the primary wire. Twist the wire tightly clockwise.

• 3

  Place the Molex crimp connector over the end of the wire. Ensure that the lower insulation clamp is centered over the upper half of the jacket and the middle conductor clamp is directly over the bare wire.

• 4

  Insert the connector into the Molex crimper. Squeeze the handles firmly to complete the crimp.