Waterproofing arrangement for wire harness

A method of sealing a wire harness in a grommet against the passage of moisture, the method comprising the steps of:

• a) collating a bundle of wires;
• b) coating the exterior of a predetermined length of said bundle with a viscous sealant;
• c) wrapping said bundle with a sheet so as to cover said predetermined length;
• d) tightly binding the sheet about the wires with a binding member wrapped about the sheet to each side of the predetermined length of the sealant coating the wires to confine said sealant between the binding members and prevent escape thereof;
• e) providing a tight fitting grommet of resilient material having annular ribs that extend into an interior of the grommet and an opening at one end thereof defined by a projecting portion formed by a long segment and a short segment, the long segment extending beyond the short segment in an axial direction;
• f) inserting said predetermined length of said bundle following the binding step into the opening of the tight fitting grommet so that the annular ribs press into the sheet to force the sealant to permeate throughout said bundle of wires;
• and
• g) tightly binding the long segment of the grommet to the bundle of wires with a binding member.