Challenge

Project 2

BACK DOOR WIRING HARNESS DESIGN

Harness Design Criteria & Packaging Rules

  • Wiring harness routing shall provide ease in manufacturing, accessibility, easy removal, and easy maintenance of attached equipment and wiring harness.
  • Routing through small structural holes and openings shall be avoided, minimize chaffing and handling of the wiring harness during installation.
  • Avoid the harness routing and clipping in the Blind zone of the Operator during harness assembly or in service.
  • Routing shall offer protection against possible damage through common misuses such as being handhold and temporary support for test equipment.
  • Provide additional slack to the harness according to the surroundings and harness bending requirements.
  • Ensure the routing meets the clearance requirements with different surrounding parts.
  • Avoid routing over the bolts, near to the bolted joints. It may damage the harness or puncture the harness. Keep harness away from panel mounting screws.
  • Avoid harness routing near sharp edges, if not possible provide protection to the harness.
  • The maximum distance between two clips on a straight branch is 200mm.
  • Provide Clips and clamps if the harness is going to bend at multiple locations.
  • The use of too many sheet-metal brackets should be avoided.
  • The branch length should be more than 50 mm.
  • Min distance between clip and branching point to be 25 mm.
  • Min distance between two branch breakouts should be 50 mm.

Connectors required

  • Interconnection connector - 12 pole connector
  • Tail light along with Indicators - 4 pole connector
  • Wiper motor - 4 pole connector
  • Number plate light - 2 pole connector
  • Electric Latch - 2 pole connector

Wiring Harness components

12 Pole Connector

4 Pole Connector

2 Pole Connector

Furr tree clip

Routing of the wiring harness

Bundle Continuity Check 

Wiring Harness Flattening 

Drafting

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