The automotive tailgate wiring harness is a core component connecting various electrical elements of the tailgate (such as door locks, switches, lighting, cameras, etc.) to the vehicle body control system, responsible for power transmission and signal transmission. The product uses high-purity copper conductors and temperature-resistant insulation materials, precision-manufactured to offer excellent conductivity, anti-interference capability, and durability, adaptable to electric tailgate systems of various vehicle models. Product Features: High-quality copper material: Uses oxygen-free copper or multi-strand stranded copper wire, with superior conductivity and low loss. Temperature-resistant insulation layer: Made of PVC or TPE material, operating temperature range -40°C to +105°C, wear-resistant and anti-aging. Precision mating design: Terminals and housings are strictly matched to ensure secure connections, preventing loosening or short circuits. Customization service: Length, branches, connector types, and labels can be customized according to vehicle manufacturer or retrofit requirements. EMC protection: Shielded structure design effectively suppresses electromagnetic interference, ensuring pure signal. Technical Specifications: Rated voltage: ≤60V DC. Rated current: Supports 1A to 30A depending on wire gauge. Wire gauge: 0.35mm² to 4.0mm² optional. Temperature range: -40°C to +105°C. Flame retardant rating: VW-1 or UL94 V-0. Protection rating: IP67 (optional waterproof connector). Application Scenarios: Widely used in electric tailgate systems of various passenger cars, SUVs, and MPVs, including electric opening/closing, kick sensor, anti-pinch function, rear tailgate lighting, camera, and radar signal transmission. Also applicable to commercial vehicle tailgates, logistics vehicle tailboards, and other occasions requiring high-reliability wiring harness connections.
Technical Specifications
| Parameters | Please consult sales for detailed specifications |
| Terminal Type | Flag Terminal / Sheathed Terminal |
| Wire Gauge | 18-22 AWG |
| Rated Voltage | 12V/24V DC |
| Rated Current | 5-15A |
| Operating temperature | -40°C ~ +125°C |
| Insulation material | PVC/XLPE |
| Waterproof rating | IP67 |
Product Features
- High temperature resistance for engine bay environments
- Waterproof and dustproof design meeting IP67 standards
- Custom terminal crimping ensures low contact resistance
- Flexible cable structure with bending life over 1 million cycles
- 100% continuity and insulation testing for guaranteed reliability
Application Scenarios
- Home Appliances and Consumer Electronics
Custom power cords, signal wires, and ribbon cables, meeting ROHS/REACH environmental standards, suitable for white goods and small appliances. - Automotive Electronics and New Energy
Automotive wiring harnesses, sensor harnesses, high-voltage connection harnesses, passing TS16949 quality system, high temperature and vibration resistant. - Industrial Automation and Equipment
Robot harnesses, servo motor harnesses, drag chain cables, high flexibility and bending resistance, adaptable to complex industrial environments. - Medical Equipment Harnesses
Medical-grade harness customization, biocompatible materials, precision terminal crimping, suitable for monitors, ultrasound equipment, etc.
Frequently Asked Questions
What is the minimum order quantity for custom harnesses?
The MOQ for standard products is 1000pcs, small trial batches can be as low as 100-200pcs. For first-time cooperation, sampling is recommended to confirm quality.
What terminal types and wire gauges are supported?
Supports full series terminal crimping (JST/Molex/TE/Hirose, etc.), wire gauge from AWG12 to AWG32, customizable length, color, and strip size.
What are the quality inspection standards for harnesses?
Implemented per UL 486A standard, including continuity test, insulation withstand voltage test, pull force test, visual inspection, with full inspection shipping report provided.
Can the color of the wire harness be customized?
Any color can be customized; usually provide a Pantone color number or color swatch for color matching. Common stock colors: black, white, red, blue, yellow, green (shipped within 24~48 hours). Custom color MOQ depends on specifications (usually from 1000 meters), lead time extended by 3~5 working days. Printing/marking service: model, LOGO, certification mark, etc. can be printed on the wire harness surface as required; both heat transfer printing and inkjet coding processes are supported. Please provide a printing draft before confirming the printing content to avoid errors.
Can this wire harness be used in medical devices? What standards must it meet?
The standard wire harness of this product is not recommended for direct use inside medical devices. Medical device wire harnesses must meet the IEC EN60601 standard, with requirements: ① low leakage current — ordinary wire harness leakage current ≤0.5mA, medical grade ≤0.1mA; ② biocompatibility — insulation and terminal materials must pass ISO 10993 biocompatibility testing; ③ high isolation voltage — reinforced insulation, isolation voltage ≥4000V; ④ cleanliness — produced in a cleanroom, no ionic contamination. Yingna Technology can customize medical-grade wire harnesses (including EN60601 certification); technical parameters and certification requirements must be communicated in advance, and production will be arranged separately.
What certifications has this wire harness passed? Can certification reports be provided?
This wire harness has passed UL (United States) and CE (European Union) certification and complies with RoHS environmental protection and REACH regulatory requirements. The UL certification number is traceable, and CE declaration documents are complete. For bulk purchases, the following can also be provided: UL certification copy, material certificate (MDS), SGS environmental test report, and product flame retardant test report. For customers with special certification requirements (such as VDE, CCC, PSE, KC, etc.), please inform us in advance, and certification applications can be arranged separately.
What is the temperature resistance range of the wire harness? Can it be used long-term in high-temperature environments?
The temperature resistance range of the wire harnesses in this machine varies by insulation material: silicone rubber insulation -60℃~+200℃ (short-term peak 250℃), PVC insulation -20℃~+105℃. In high-temperature environments (such as automotive engine compartments, around industrial furnaces, and inside new energy vehicle battery packs), silicone rubber wire harnesses must be selected; PVC material will accelerate aging and crack the insulation layer in such scenarios. For low-temperature environments (such as extremely cold outdoor areas) and high-low temperature cycling applications, silicone rubber wire harnesses are also recommended.
What is the flame retardant rating of the wire harness? Does it comply with the UL VW-1 standard?
The flame retardant rating of this wire harness reaches UL VW-1 (vertical burn test), which is the minimum flame retardant requirement of the UL 758 electronic wire standard. Higher flame retardant ratings are optional: UL VW-1 + vertical burn, UL FT2 (horizontal burn), UL VW-1 + FT2 dual certification. Significance of flame retardant standards: For a wire harness that passes VW-1, in the vertical burn test, after 5 times of 15-second burning, the flame self-extinguishes within 60 seconds, does not ignite the cotton cloth below, and has no burning drips. For applications with high fire protection requirements (such as inside new energy vehicle battery packs and medical devices), it is recommended to select a wire harness with a higher flame retardant rating.
What is the insulation material of this wire harness? Does it meet environmental protection requirements?
The insulation material of this harness uses silicone rubber (Silicone Rubber) or PVC, with the corresponding material selected according to different model specifications. Silicone rubber withstands temperatures from -60℃ to 200℃; PVC withstands temperatures from -20℃ to 105℃. The entire series of wires complies with RoHS 10-item testing and REACH SVHC screening, contains no lead, mercury, cadmium, or other harmful substances, and third-party SGS test reports can be provided. Electronic wires exported to North America must meet the UL VW-1/FT2 flame retardant rating; those exported to Europe must meet the CE Low Voltage Directive.
What is the conductor material of this wire harness? Bare copper or tinned copper?
This product uses stranded tinned copper wire conductors, balancing conductivity and corrosion resistance. Bare copper conductivity is approximately 101%IACS, and tinned copper is approximately 98%IACS (difference only about 3%). Advantages of tinning: oxidation resistance is 3~5 times stronger, solderability is better (avoiding solder non-wetting issues), and corrosion resistance is significantly improved. For scenarios requiring high reliability such as new energy vehicles and outdoor equipment, it is recommended to prioritize tinned copper wire harnesses.
What after-sales services are available after purchasing wire harnesses?
Yingna Technology wire harness products have a standard warranty of 2 years. During the warranty period, free repair or replacement is provided for damage not caused by human factors. Domestic customers receive 48-hour response and repair completion within 7 working days; overseas customers can arrange repair by DHL/FedEx. Products beyond the warranty period are provided paid repair services (cost approximately 30~50% of a new product). Lifetime technical support is provided, including wire harness selection consultation, terminal processing solutions, and quality problem diagnosis. Annual framework agreement customers enjoy value-added services such as priority production scheduling, free samples, and factory inspection support.
How to judge the quality of wire harnesses?
3 methods to quickly identify wire harness quality: ① Visual inspection — the insulation surface is smooth with no marks, no bubbles, and no color difference or eccentricity; ② Bending test — after repeated bending 100 times, the insulation has no cracks (silicone rubber) and no obvious whitening (PVC); ③ Flame test — for high-quality wire harnesses, self-extinguishing time after removal from flame is ≤30 seconds (UL VW-1/FT2 standard); inferior wire harnesses continue burning with drippings. Also measure insulation thickness (whether it meets UL standard) and conductor resistance (≤ UL specified maximum). Before bulk purchasing, it is recommended to require the supplier to provide samples for comprehensive quality confirmation.
