Overview of the Necessity and Importance of  Wiring Harness Drawings Build

 

Wiring harness drawings are essential for providing a clear and detailed representation of the harness layout, connection relationships, and component information. These drawings ensure the accuracy, reliability, and safety of the wiring harness. They illustrate the harness routing, including starting points, endpoints, and intermediate connection points, as well as the harness path. Moreover, the drawings depict the connection methods and relationships of each wire within the harness. As the primary source of information for wiring harness production, these drawings play a fundamental and critical role in the manufacturing process.

 

Wire harness drawings build from customers’ drawings :

 

QL-Custom’s Process from Inquiry Receipt to Drawing Submission for Customer Review :

Upon receiving an inquiry, including customer drawings or samples, our engineers determine the sourcing strategy, whether it’s original or domestic materials. They then source quotes from multiple suppliers, comparing prices to offer the best option to the customer. After price confirmation, a sample request is submitted. Engineers create drawings based on customer-provided information or samples. After internal review and approval, the drawings are sent to the customer for confirmation.

 

Drawing Considerations and Details – Analyze customers’ drawing to generate our Drawing :

 

 

As shown above, a typical drawing consists of seven main sections:

 

1. Drawing information: Customer part number, internal part number, drafter, reviewer, revision level, date, etc.
2. Revision history: Details of any changes made to the drawing.
3. Quality and testing requirements: Specific standards and tests the harness must meet.
4. 2D layout: A comprehensive view showing component placement, wire lengths, and other crucial manufacturing details.
5. Circuit diagram: Illustrates the point-to-point connections within the harness.
6. Bill of Materials (BOM): Lists all components, including wires, terminals, connectors, and sleeving, with quantities and internal part numbers.
7. Packaging information: Specifies the packaging method and labeling for the harness.

 

Drawings are essential in any manufacturing industry, serving as technical documents that communicate product structure, dimensions, shape, and other requirements. Production commences only after both parties have reviewed and approved the drawings.

 

Creating Drawings from Samples :

 

When provided with a sample, we follow these steps:

1. Labeling: Each wire and connector is meticulously labeled (e.g., P1, P2, P3…) to clearly identify its position.
2. Circuit Verification: The sample is powered up to confirm the corresponding circuit for each wire.
3. Measurement: The sample is laid flat, using the leftmost connector as a reference point. Precise measurements are taken between connectors to determine wire lengths. Thorough record-keeping is crucial to avoid errors.

 

 

Based on these steps, a preliminary sketch and circuit diagram are created. Each connector is photographed, and online resources are used to identify the corresponding model and confirm component quantities. This information is then compiled into a BOM. Finally, the sketch, circuit diagram, and BOM are submitted to the drafter for creating the formal drawing.

 

Difference Between Specifications and Drawings :

 

In the wiring harness industry, a specification document outlines the function, quality, and performance requirements of a specific component. It details technical parameters, dimensions, materials, packaging, and other relevant information. On the other hand, a wiring harness drawing visually represents the harness layout within a vehicle or electrical system, showing connector locations and wire routing.

 

 

QL-Custom’s Drawing Tools:

 

QL-Custom has build a complete design of wire harness symbols how to express

 

 

 

CAD – Benefits for 2D Drawings:

CAD software is a powerful design tool that enables precise drawing and measurement, minimizing human error and enhancing design accuracy. Its robust drawing and editing features, along with compatibility with multiple file formats, facilitate seamless data exchange.

 

Pro-E, Solidworks, UG – Advantages for Connector Design:

Pro-E: Renowned for its powerful geometric modeling capabilities, particularly in surface modeling, Pro-E excels in simulation and parametric design.

 

Solidworks:

User-friendly and intuitive, Solidworks caters to a wide range of industrial design needs with its comprehensive feature set.

 

UG:

A fully-featured 3D modeling software, UG boasts a robust architecture and comprehensive capabilities, covering virtually all aspects of design.

 

QL-Custom can help you to build any wire harness drawings from simple to complex wiring diagrams

 

In conclusion, all three software options are well-suited for connector design. The choice ultimately depends on personal preferences, project requirements, and the specific strengths of each software.