Low Voltage Wire Harness Technician

DeWinter BH; Mountain View (CA); On-site; USD 65,000 - 90,000; Full time

Job summary

DeWinter Group seeks a meticulous Low Voltage Wire Harness Technician to fabricate, install, test, and troubleshoot 12V/24V harnesses for prototype vehicles and test rigs. You will verify harness performance, document revisions, and collaborate with design engineers to fix build issues in a lab environment.

Onsite role based in Sunnyvale, CA with 45–50 hour weeks; some travel may be required. High attention to detail and familiarity with automotive data interfaces are essential.

Qualifications

• Minimum 2 years hands-on experience fabricating, installing, and troubleshooting low-voltage harnesses.
• Experience in automotive, aerospace, robotics, drone, or related environments.
• Proficiency with automotive connectors: Molex, TE Connectivity, Deutsch, Amphenol.
• Ability to read schematics, harness drawings, and BOMs.

Responsibilities

• Fabricate, install, and validate 12V/24V wire harnesses.
• Test harnesses on prototype vehicles and test benches.
• Document revisions and root causes; support ECOs and engineering changes.
• Collaborate with design engineers to resolve build issues.

Skills

Wire harness fabrication

Electrical testing

Schematic interpretation

12V/24V systems

CAN, Ethernet, GMSL, USB

Documentation & revisions

Proactive communication

Education

No degree required

Tools

Crimp tools

Digital multimeter

Harness testers

CAN tools

Job description

Low Voltage Wire Harness Technician

Overview

Build and validate the low-voltage electrical systems powering the next generation of autonomous vehicles, advanced test platforms, and prototype equipment. As a Low Voltage Wire Harness Technician, you will fabricate, install, test, and troubleshoot 12V/24V wire harnesses connecting computing systems, sensors, drive-by-wire interfaces, data networks, and power distribution components.

This hands-on, lab-based role combines precision bench fabrication with installation and validation on prototype vehicles and test benches. You will collaborate closely with design engineers to identify physical build issues, support engineering changes, maintain accurate as-built documentation, and improve the reliability of prototype fleets and test systems. High-voltage electrical work is strictly outside the scope of this position.

Required Skills

• At least 2 years of hands-on experience fabricating, installing, and troubleshooting low-voltage wire harnesses.
• Experience in automotive, aerospace, robotics, drone, industrial, or comparable environments.
• Ability to cut, strip, crimp, splice, shield, sleeve, label, and terminate wire harnesses.
• Hands-on experience with automotive connectors and terminals, including:
• Molex
• TE Connectivity
• Deutsch
• Amphenol
• Proficiency using crimp tools, pull testers, digital multimeters, harness testers, and basic CAN tools.
• Ability to read and interpret schematics, harness drawings, pinout tables, and bills of materials.
• Strong knowledge of 12V/24V electrical systems, including:
• Wire gauge selection
• Circuit protection and fusing
• Grounding
• Strain relief
• Harness routing and clearance requirements
• Familiarity with automotive data interfaces such as CAN, Ethernet, GMSL, and USB.
• Experience performing continuity, isolation, pull-force, and functional testing.
• Ability to diagnose opens, shorts, voltage drops, bad grounds, intermittent faults, and connector wear.
• Strong attention to detail when documenting revisions, discrepancies, root causes, and corrective actions.
• Ability to rework harnesses in accordance with Engineering Change Orders and maintain accurate revision records.
• Proactive communication skills, including the confidence to raise physical build issues and drawing discrepancies with engineering teams.
• Ability to work inside prototype vehicles and in tight or physically demanding spaces.

Nice-to-Have Skills

• IPC/WHMA-A-620 certification.
• J-STD-001 soldering certification.
• Experience working with harness CAD outputs such as Capital, RapidHarness, or CATIA Electrical.
• Familiarity with JIRA for task and ticket management.
• Experience building breakout boxes, test fixtures, instrumentation harnesses, or lab test equipment.
• Experience creating redlined drawings, pinout revisions, wire lists, and as-built documentation.
• Familiarity with Slack or similar collaboration tools.
• Experience monitoring and maintaining inventory of wire, terminals, connectors, and related lab supplies.

Preferred Education and Experience

• At least 2 years of relevant hands-on low-voltage wire harness experience.
• No specific degree or formal educational background is required.
• Practical experience with harness fabrication, vehicle wiring, electrical testing, and troubleshooting is highly valued.
• Experience supporting prototype development, engineering changes, or complex electromechanical systems is beneficial.

Other Requirements

• Work location: Onsite and lab-based in Sunnyvale, California.
• Schedule: Flexible start times between 6:00 AM and 9:00 AM; typically 45-50 hours per week.
• Overtime may be approved based on business needs.
• Approximately 15% national travel may be required to support regional vehicle testing and field activities. Potential international travel may also be available.
• Must be willing and able to travel as needed.
• Contract-to-hire opportunity with an initial 6-month term and potential transition to direct hire.
• Targeted start within approximately 2-3 weeks.
• High-voltage electrical work is strictly outside the scope of this role.