WG9719810001 Left Rear Lamp Assembly

WG9719810001 is a dedicated left rear lamp assembly for SINOTRUK HOWO series heavy-duty trucks, serving as the core safety lighting component of the vehicle rear-end warning and signal system. It integrates multiple functions in one body, including left turn signal, brake light, position light, reverse light and reflective warning, comprehensively undertaking the functions of rear-end signal transmission and safety warning during vehicle operation.

Engineered for commercial vehicle harsh working conditions, it adopts high-brightness light source and sealed structural design, ensuring clear and stable light emission in extreme weather such as heavy rain, heavy snow, fog and sandstorm, and visible warning at long distances (≥500 meters). It effectively reminds rear vehicles of the vehicle's driving state (turning, braking, reversing), reduces rear-end and collision accidents, and adapts to long-haul transportation, construction site operation, mountain road driving and other complex working scenarios of heavy-duty trucks.

Applicable Vehicles: SINOTRUK HOWO series (HOWO T7H, TX, TH7, A7, W5G); compatible with partial SHACMAN heavy-duty truck models with consistent mounting dimensions

Adaptable Systems: Original factory vehicle rear-end lighting system, perfectly matching the vehicle's low-voltage electrical system (24V), rear frame mounting bracket and wiring harness interface

OE Reference Number: WG9719810001

Interchangeability: Direct plug-and-play replacement, the mounting hole position, wiring connector, overall size and light function are 100% consistent with the original factory part. No need to modify the rear frame, wiring harness or mounting bracket, and the replacement can be completed quickly.

Value-added Service: Support vehicle VIN code-based configuration verification to distinguish between standard and heavy-duty waterproof versions; provide matching suggestions for right rear lamp (matching OE: WG9719810002) and wiring harness maintenance.

Main Dimensions: Overall size 420±3mm × 280±2mm × 120±1mm; mounting hole center distance 380±0.5mm × 80±0.5mm; wiring connector: 7-pin standard plug (matching original wiring harness)

Electrical Specifications: Rated Voltage: 24V DC; Position light power: 5W; Turn signal power: 21W; Brake light power: 21W; Reverse light power: 21W

Material Specification: Lamp housing: ABS engineering plastic (injection molding); Lamp cover: High-transmittance PC material (anti-scratch, anti-UV); Light source: SMD LED (turn signal/brake light) + incandescent bulb (position light/reverse light); Reflector: Vacuum-plated aluminum alloy

Operating Temperature Range: -40℃ ~ +85℃ (resists extreme cold in northern regions and high temperature of vehicle rear-end exposure to sunlight)

Protection Grade: IP67 (dust-tight, waterproof against heavy rain, high-pressure water washing and road splash)

Light Performance: Luminous flux (brake light): ≥ 800lm; Turn signal flash frequency: 60±10 times/min; Reflective brightness: ≥ 100cd/lx·m²

Service Life of Light Source: LED light source ≥ 30,000 hours; Incandescent bulb ≥ 1,000 hours

Core Materials: High-transmittance PC (lamp cover, light transmission rate ≥ 92%, anti-yellowing); ABS engineering plastic (lamp housing, impact resistance, anti-aging); SMD LED lamp beads (high brightness, low power consumption); Vacuum-plated aluminum alloy (reflector, high light reflection rate); Nitrile rubber (sealing ring, waterproof and oil-proof)

Surface Treatment: Lamp housing adopts matte spray coating (anti-scratch, anti-fading); Lamp cover adopts anti-UV coating (prevents yellowing after long-term sunlight exposure); Wiring connector adopts tin-plating (anti-corrosion, good conductivity)

Production Process: Precision injection molding (lamp housing and lamp cover); Vacuum coating (reflector); SMT surface mount (LED lamp beads); Sealing assembly (silicone waterproof sealing); Light performance calibration; Waterproof pressure test; 100% light function inspection before leaving the factory

Production Line Capacity: Equipped with automatic LED assembly and lighting test production lines, monthly output ≥ 20,000 sets (left/right matching production)

Quality Grade: OE-Matched High-Quality Part, fully compliant with SINOTRUK original factory technical standards and GB 4785 "Motor Vehicle Rear Lighting and Signaling Devices" national standard

Inspection Items: Dimensional accuracy test; Light performance test (luminous flux, color temperature); Waterproof immersion test (IP67); Salt spray corrosion test (≥ 1000 hours); Impact resistance test; High and low temperature aging test; Wiring conductivity test

Quality System: IATF 16949, ISO 9001 certified, strict implementation of incoming material inspection, process inspection and final product inspection; each product passes 3 rounds of light function and waterproof testing

Batch Tracking: Each left rear lamp assembly is laser-marked with OE number, batch number and production date on the lamp housing; complete production and test records are retained for 3 years, supporting full batch traceability

Average Service Life: ≥ 5 years or 300,000 kilometers under normal operating conditions (excluding consumable incandescent bulbs)

Performance Improvement:

Integrated Multi-Function Design: Integrates 5 functions in one, reducing the number of components and potential failure points, and facilitating maintenance and replacement.

Dual Light Source Configuration: LED light source (turn signal/brake light) has high brightness, fast response (≤0.1s) and long service life; incandescent bulb (position light/reverse light) has stable light emission and low replacement cost.

Enhanced Waterproof Sealing: Double silicone sealing ring + integrated injection molding sealing structure, effectively preventing water ingress and fogging inside the lamp body.

Harsh Environment Adaptation:

Low Temperature: Normal light emission at -40℃, no lamp bead frost cracking or bulb failure;

Waterproof Dustproof: IP67 rating, withstands heavy rain, car wash high-pressure water and sandstorm erosion, no internal short circuit;

UV Resistance: Anti-UV lamp cover does not yellow after 3 years of outdoor exposure, maintaining high light transmittance;

Vibration Resistance: Special anti-loosening structure, resists long-term vehicle driving vibration, no internal component loosening or light failure.

Common Fault Improvement: Solves common OE aftermarket problems such as lamp cover yellowing, internal fogging/water ingress, LED lamp bead burnout, poor contact of wiring connector, and dim light emission of incandescent bulbs.

Maintenance Value:

Time-Saving: Direct bolt-on replacement, no need for professional wiring modification, one technician can complete replacement within 15 minutes;

Cost-Effective: Integrated design avoids the need to replace multiple single-function lamps, reducing maintenance costs;

Safety Guarantee: High-brightness light and clear warning signal effectively reduce rear-end accidents, improving driving safety.

Packaging Configuration: Individual EPE anti-collision foam wrapping (full coverage of lamp body) + transparent plastic film (moisture-proof) + corrugated carton; lamp cover is protected by a separate plastic film to avoid scratches; bulk orders are packed with partitioned cartons + wooden pallets.

Outer Carton Marking: OE No. WG9719810001, Product Name (Left Rear Lamp Assembly), Applicable Models (SINOTRUK HOWO T7H/TX/TH7), Voltage (24V), Quantity, Gross Weight/Net Weight, Waterproof Grade (IP67), Anti-Collision and Moisture-Proof Warning Signs.

Product Marking: Laser engraving on the lamp housing includes OE Number, 24V, IP67, Batch Number and Production Date; the wiring connector is marked with function labels (Turn/Brake/Position/Reverse) for easy wiring; the lamp cover is printed with reflective warning strips (compliant with national safety standards).

Customization Service: Support neutral packaging or customized branding; can provide all-LED version, different color temperature (3000K warm light/6000K cool light) for special user needs.

Inventory Status: In-stock supply for SINOTRUK HOWO series mainstream models, matching right rear lamp (WG9719810002) is also in stock.

Minimum Order Quantity (MOQ): 1 piece for sample testing; 30 pieces for bulk order (left/right matching order is preferred).

Delivery Cycle:

Stock: 1-3 working days;

Bulk Order: 7-10 working days;

Customized Order: 10-15 working days.

Supply Stability: Long-term stable supply of core materials (PC, ABS, LED lamp beads); strategic safety stock is maintained to cope with urgent orders from SINOTRUK service stations and dealers.

Certification Qualifications: CCC (China Compulsory Certification), IATF16949, ISO9001; compliant with GB 4785 national standard; can provide third-party light performance and waterproof test reports.

Quality Guarantee Policy: 18-Month Warranty (excluding consumable incandescent bulbs); free replacement for non-human damages such as lamp body water ingress, LED lamp bead burnout, lamp cover yellowing and wiring connector failure.

Technical Support: 24-hour online technical response, providing installation guidance, wiring diagram and fault diagnosis solutions (e.g., lamp not lighting, flash frequency abnormal); offer training on bulb replacement and lamp maintenance.

Return and Exchange Policy: 7-day no-questions-asked return for unused products in original packaging; defective products are replaced with freight prepaid by the seller, ensuring minimal impact on vehicle operation.

Case 1: Northern China Cold Region TransportationApplication: HOWO T7H tractors operating in Heilongjiang and Inner Mongolia.Result: The lamp assembly runs stably in -35℃ low temperature, no LED lamp bead frost cracking or bulb failure; the waterproof structure effectively prevents snow melting water from entering, no internal fogging, and the warning signal is clearly visible in heavy snow weather, service life exceeding 350,000 kilometers.

Case 2: Southern China Humid Coastal AreaApplication: HOWO TX cargo trucks in Guangdong and Fujian.Result: IP67 waterproof grade and anti-corrosion treatment of wiring connector effectively resist salt spray and humid air corrosion; no lamp body rust or internal short circuit after 4 years of use; anti-UV lamp cover remains transparent, maintaining good light transmittance.

Case 3: Northwest Construction SiteApplication: HOWO TH7 dump trucks in Xinjiang Gobi region.Result: The sealed structure prevents sand and dust from entering the lamp body, avoiding internal component wear and short circuit; the high-brightness LED brake light and turn signal can be clearly seen in sandstorm weather, effectively reminding construction site vehicles and reducing collision accidents.

Installation:

Disconnect the negative battery terminal before installation to prevent short circuit;

Clean the mounting surface of the rear frame to remove dust and rust, ensure the sealing ring fits tightly;

Tighten the mounting bolts with the specified torque (15-20 N·m) to avoid vibration noise and water ingress;

Connect the wiring according to the function labels on the connector, test all light functions (turn signal, brake light, etc.) before completing installation.

Inspection: Regularly check the lamp cover for scratches and yellowing, and the wiring connector for looseness and corrosion every 20,000 kilometers; wipe the lamp cover with a soft cloth regularly to remove dust and improve light transmittance; replace the incandescent bulb in time when it burns out.

Storage: Store in a dry, ventilated warehouse with relative humidity ≤ 75%, avoid contact with water, oil and corrosive substances; place horizontally to avoid extrusion deformation of the lamp cover; avoid long-term exposure to sunlight to prevent lamp cover aging.

Replacement: Replace with the same OE model (WG9719810001) for left rear; it is recommended to replace the left and right rear lamps in pairs if they are severely worn, to ensure consistent light brightness and warning effect; after replacement, test all light functions to ensure normal operation.

Q1: How to confirm that this left rear lamp matches my HOWO truck?A1: Please provide your vehicle model (e.g., HOWO T7H) or VIN code, and we will verify the compatibility of the lamp's overall size, mounting hole position, wiring connector and light function with your vehicle to ensure perfect fit.

Q2: Why does the lamp body fog up after rain?A2: A small amount of fogging is normal (caused by temperature difference and slight air leakage), which will dissipate automatically after the lamp is lit for 10-15 minutes; if fogging persists or there is water accumulation inside, it is a waterproof failure, please contact us for replacement.

Q3: Can the incandescent bulb be replaced with an LED bulb?A3: Yes, the position light and reverse light bulbs can be replaced with 24V LED bulbs (matching specifications), which can improve brightness and extend service life; it is recommended to use original-matched LED bulbs to avoid circuit overload or flash frequency abnormality.

Q4: Can samples be provided for installation and performance testing?A4: Yes, sample supply is supported. The sample fee can be fully deducted from the subsequent formal order, and the sample delivery cycle is 2-3 working days; matching right rear lamp sample can also be provided if needed.

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