Patent ID: 8403690

Claim:
A water stop structure for a wire harness for preventing water penetration from the wire harness connected to an electronic control unit installed in an automotive vehicle or a motorcycle via a non-waterproof connector of the electronic control unit, characterized in that: terminals mounted on ends of wires constituting the wire harness are inserted and locked for connection in a wire harness connector to be mated with the non-waterproof connector of the electronic control unit, the wire harness connector having no means for sealing wires of the wire harness as the wires extend through the wire harness connector, each wire connected to the connector includes a water stop section at a leading end position of a bundled area very close to a wire harness connector connected position, and the water stop section is formed by swaging and crimping a crimping terminal to a core exposed part formed by exposing a core of each wire from an insulation coating part, filling a waterproofing agent into clearances between strands of the core exposed part between the crimping terminal and an insulation coating and coating the core exposed part with a waterproof member.