EV Battery Harness: Supply Chain Support
How we supported an automotive supplier with high-voltage harness assembly, documented testing, and China-plus-Philippines production options.
Client
Automotive Supplier
EV manufacturing partner (representative)
Industry
Automotive / EV
High-voltage battery systems
Products
Battery Harnesses
400V+ high-voltage cables
The Challenge
An automotive supplier was facing supply chain challenges with an EV battery harness program. The buyer needed a harness assembly partner that could review the build package, support controlled testing, and provide production-route flexibility.
Key Pain Points:
- 1Long lead times causing production schedule pressure
- 2Cost pressure on harness assembly and sourcing
- 3Multiple suppliers creating quality inconsistencies
- 4No flexibility for design changes during ramp-up
Requirements:
- IATF 16949 certification mandatory
- 400V+ high-voltage capability
- 100% electrical testing on every unit
- Repeatable assembly controls for production ramp-up
Our Solution
We implemented a comprehensive solution that addressed every pain point while exceeding quality requirements.
Design for Manufacturability (DFM) Optimization
Our engineering team analyzed the original design and identified opportunities to reduce assembly complexity. We consolidated wire routing, optimized connector placement, and standardized components without compromising electrical performance.
Single-Source Manufacturing
We supported the program through an IATF 16949 quality framework, reducing coordination gaps between harness build, inspection, and documentation. Controlled production routing supports consistent output and response to engineering changes.
100% Electrical Testing
Harnesses can undergo high-voltage testing, continuity verification, and insulation resistance testing according to the released specification. Documented test records help the customer's production line verify incoming assemblies.
Dual-Factory Supply Security
Production capability established in both China and Philippines facilities, providing backup capacity and tariff optimization options. The client now has complete supply chain redundancy for critical EV components.
The Results
"For this EV harness program, the useful work was practical: review the drawing, control the BOM, document electrical tests, and keep production routing flexible across China and Philippines options. The case is presented without customer names or unverifiable performance metrics.
Technical Specifications
| Voltage Rating | 400V - 800V DC |
| Wire Gauge | AWG 2 - AWG 8 (High-voltage sections) |
| Shielding | 360° braided shield with drain wire |
| Jacket Material | Orange XLPE (cross-linked polyethylene) |
| Operating Temperature | -40°C to +125°C |
| Certifications | IATF 16949, USCAR compliant |
| Testing | 100% Hi-Pot, continuity, insulation resistance |
Facing Similar Challenges?
Get a competitive quote for your EV harness project. Our engineering team is ready to optimize your design for cost and quality.