Automotive Wire Harness& Cable Assemblies
Custom harnesses for ICE and EV programs — engine and powertrain, orange high-voltage and battery, ADAS and sensor, body and chassis. Up to 1000V DC, CAN-FD / LIN / automotive Ethernet, IP67/IP69K sealed, built to IATF 16949 and IPC/WHMA-A-620 Class 3 workmanship.
12-hour automotive RFQ review
Send drawings, connector callouts, voltage class, annual volume, and validation needs. Engineering returns MOQ, lead time, DFM, and test-plan feedback.
Start RFQ reviewAutomotive wire harness quote details for EV, ADAS, waterproof, and IATF searches
Automotive ad traffic needs a direct match for IATF 16949, IPC-620, EV high-voltage, Deutsch and Molex connectors, waterproof IP67/IP69K sealing, MOQ, sample lead time, and production readiness.
What makes an automotive wire harness different
An automotive harness is the nervous and power system of the vehicle, and it has to survive a brutal environment for the life of the car. Under-hood circuits see -40°C to +125°C, constant vibration, and splashes of oil, fuel and coolant; chassis and braking leads take road spray and grit; body and lighting branches need thin-wall FLR2X / FLRY wire to save weight. General-purpose hook-up wire and unsealed connectors fail in that world — so automotive harnesses use cross-linked TXL/GXL/SXL primary wire, abrasion- and fluid-resistant protection, and sealed connector systems from the start. Every build follows IATF 16949 process discipline and IPC/WHMA-A-620 Class 2/3 workmanship under our ISO 9001 quality system.
The wiring changes job at every system. Powertrain harnesses manage the engine, fuel injection and transmission; orange high-voltage cable assemblies carry traction power between the battery, inverter and motor with HVIL interlock continuity at up to 1000V DC; ADAS and sensor harnesses move radar, camera and ultrasonic data over CAN / CAN-FD networks and automotive Ethernet; and body, interior and chassis branches handle lighting, comfort, ABS and wheel-speed. We build all of these as custom, sealed, tested assemblies — including commercial EV truck harness families and waterproof IP67/IP69K constructions for the harshest chassis locations.
Automotive systems we wire
Sealed, vibration-rated harnesses for every system on ICE and EV platforms
Engine & Powertrain Harnesses
Under-hood engine, fuel-injection, ignition and transmission-control harnesses that survive heat, vibration and fluid exposure right next to the powertrain. Built with cross-linked TXL/GXL/SXL primary wire and sealed connectors so they hold up through the vehicle life.
EV High-Voltage & Battery
Orange shielded high-voltage cable assemblies for battery packs, inverters, traction motors and on-board chargers, with HVIL (high-voltage interlock loop) continuity and the spacing a 1000V DC architecture demands.
ADAS & Sensor Harnesses
Precision harnesses for radar, camera, ultrasonic and LiDAR sensors plus the data backbone that links them — built for clean signal integrity on CAN-FD and automotive Ethernet links across the vehicle.
Body, Interior, Chassis & Braking
Body/interior, lighting, door, chassis and braking harnesses — including ABS and wheel-speed leads exposed to road spray and grit — sealed to IP67/IP69K and routed with clips for clean retention.
Sealed off-road and powertrain branches that need rugged DT/DTM terminations can be quoted through our Deutsch connector cable assembly service.
Built automotive-grade, layer by layer
Conductors
Automotive primary wire — TXL, GXL and SXL cross-linked types plus FLR2X / FLRY thin-wall — sized for current and voltage drop, with fine-stranded copper for flex and vibration life.
Insulation
Cross-linked PE and PVC insulation rated -40°C to +125°C, plus orange shielded HV insulation for EV traction circuits where dielectric strength and creepage matter at 1000V DC.
Protection & Jacket
Abrasion- and fluid-resistant (oil, fuel, coolant) over-jackets with convoluted-tubing and tape protection so harnesses survive under-hood heat, chafe points and road debris.
Connectors & Sealing
Sealed TE Deutsch DT/DTM, Molex MX150/CMC, Sumitomo, Yazaki and Aptiv connectors terminated to IP67/IP69K, validated to USCAR-2 / LV214 connector requirements.
Automotive-grade technical capabilities
IATF 16949 and IPC/WHMA-A-620 manufacturing with sealed connector systems, validated for under-hood, chassis and 1000V DC EV service.
Why choose our automotive wire harness services
Sealed, tested harnesses built to the standards OEMs and Tier 1 suppliers require
Built to IATF 16949 Workmanship
Automotive harnesses manufactured to IATF 16949 process discipline and IPC/WHMA-A-620 Class 2/3 workmanship under our ISO 9001 quality system — built to the requirement, not a repurposed industrial process.
EV High-Voltage Expertise
Orange shielded HV cable, HVIL interlock continuity, 360° shield grounding and 1000V DC spacing for battery, inverter and traction-motor assemblies — not just legacy 12/48V wiring.
USCAR-2 / LV214 Validation
Connector systems and terminations selected and crimped to USCAR-2 and LV214 connector-validation requirements, with sealed IP67/IP69K interfaces for under-hood and chassis exposure.
100% Electrical Test
Every harness gets continuity, hi-pot and circuit-mapping verification, with sealed-connector and HVIL checks where the application calls for it, before it ships.
Automotive industry standards
We hold ISO 9001 and IPC/WHMA-A-620 workmanship certification, and build to the automotive standards OEMs and Tier 1 suppliers require.
Automotive wire harness FAQ
What automotive wire do you use in engine and body harnesses?
We build with automotive primary wire — cross-linked TXL, GXL and SXL types for under-hood and powertrain runs, and FLR2X / FLRY thin-wall wire for body, interior and lighting circuits. Insulation is cross-linked PE or PVC rated -40°C to +125°C, chosen for the temperature, abrasion and fluid (oil, fuel, coolant) exposure at each location.
Are your EV harnesses rated for high-voltage battery systems?
Yes. We build orange shielded high-voltage cable assemblies for EV battery packs, inverters, traction motors and on-board chargers rated for system voltages up to 1000V DC. Constructions include HVIL (high-voltage interlock loop) continuity, EMI shielding with 360° grounding, and the creepage/clearance spacing a high-voltage architecture requires. See our high-voltage cable assembly service for the full specification.
Which connectors do you terminate for automotive programs?
We terminate sealed automotive connector systems including TE Deutsch DT/DTM, Molex MX150/CMC, Sumitomo, Yazaki and Aptiv, with IP67/IP69K sealing for under-hood, chassis and wash-down exposure. Terminals are crimped and validated to USCAR-2 / LV214 connector requirements and tested in-house.
Do you support CAN, CAN-FD, LIN and automotive Ethernet?
Yes. We build vehicle-network harnesses for CAN and CAN-FD (120 ohm twisted pair), LIN body and lighting networks, and automotive Ethernet links for ADAS and infotainment. We control impedance, twist and shielding so radar, camera and sensor data stays clean across the vehicle.
What standards do your automotive harnesses meet?
Harnesses are manufactured to IATF 16949 process discipline and IPC/WHMA-A-620 Class 2/3 workmanship, with connectors validated to USCAR-2 / LV214 requirements — all under our ISO 9001 quality system. We hold ISO 9001 and IPC/WHMA-A-620; other standards are applied as the build-to requirement for your program.
How do you protect harnesses from under-hood heat and abrasion?
Under-hood and powertrain harnesses use cross-linked insulation rated to +125°C, abrasion- and fluid-resistant over-jackets, and convoluted-tubing plus tape protection at chafe points. Sealed connectors keep oil, fuel, coolant and moisture out of the contact interface.
Can you handle both ICE and EV vehicle programs?
Yes. We build engine/powertrain, body, interior, lighting, chassis and braking (ABS/wheel-speed) harnesses for internal-combustion vehicles, and orange HV, battery, BMS and HVIL assemblies for electric and hybrid platforms — including commercial EV truck harness families.
What is your lead time and MOQ for automotive harnesses?
We support prototypes from low piece counts with 7–10 day sample lead times, scaling to production batches once a harness is validated on the vehicle. We give DFM feedback on your drawings — connector selection, conductor sizing, sealing class and routing — to optimize manufacturability and cost.
Ready for your automotive wire harness project?
Sealed, 100% electrically tested harnesses built to IATF 16949 and IPC/WHMA-A-620, with 7–10 day samples. Talk to our automotive specialists.
RFQ
Send an automotive wire harness RFQ
Upload a drawing, BOM, connector list, sample photo, or vehicle system notes. Our team reviews IATF, IPC-620, waterproof, Molex, Deutsch, EV HV, MOQ, and lead-time requirements before quoting.
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