Grommets And Sealing Requirements; Wire Routing - Ford C-MAX HYBRID 2013 Modifiers Manual

Electrical
• Scroll — Similar to convolute, but without the ridges. Scroll is used where harness rigidity is
required, especially for maintaining critical locator dimensions. Use scroll for short lengths only,
as it is quite inflexible.

Grommets and Sealing Requirements

Any additional wiring routed through sheet metal must pass through a grommet that both seals the
opening and locates the wire(s). Two-piece grommets (rubber with plastic inserts) are
recommended to facilitate installation and retention.
• Locate grommets so they are accessible for proper seating (achieved by pulling) in sheet metal
holes.
• Ramp grommets at the insertion end to facilitate installation and sealing.
• Be sure that the direction of the hole punch is in the direction of grommet seating and the hole is
burr-free.
• Make sure the grommet molding compound will adhere to the harness to prevent slippage.
• Make sure the grommet will withstand the environment (temperature, splash).
• Be sure that holes are large enough to allow the installation of the harness without causing
circuit damage.
• Use adhesive tape on main trunks or branches with at least a 50% overlap to prevent wicking
through grommets. Be certain to diaper-wrap the takeouts.

Wire Routing

Wire harness routing should conform to the following:
• Protect wires routed through holes in sheet metal or castings with a grommet whether or not
conduit is used (see figure below).
FCS-212235-13
Section 2: Electrical
2-17
March 2013