As a complementary accessory for Haojue and Suzuki cruiser models, the core positioning of this taillight assembly is "a factory-standard repair/upgrade component". It targets two types of users: first, commuter riders who regularly use models like the HJ125-8E and GN125-2F and need to replace their aging or damaged original taillights; second, retro enthusiasts who want to upgrade to more durable lighting while retaining the classic look of their models.

From a market perspective, it represents "practical retro": it doesn't pursue the technological brilliance of LED lights, nor does it pile on unnecessary decorative elements. Instead, its core goal is seamless integration with the original motorcycle style—chrome-plated metal base, red transparent lens, embedded reflectors—every detail echoes the classic "teardrop fuel tank + chrome exhaust" design of cruiser motorcycles, maintaining a unified retro feel at the rear.

The taillight assembly features the iconic "square and rounded combination" design of American cruiser motorcycles: the main light is a slightly curved square red lens, with a small turn signal integrated on the left. The overall lines are simple yet not monotonous, while the chrome-plated metal base adds a sense of metallic weight to the plastic lens, matching the "exposed mechanical aesthetics" of cruiser motorcycles.

• Lens: Made of high-transmittance PMMA engineering plastic, 2.5mm thick, ensuring excellent light transmission (≥92%) and resistance to UV aging and impact. Tested to withstand a 500g steel ball impact from a height of 1.5 meters without breaking, sufficient to handle everyday gravel and minor collisions.
• Base: Utilizes ABS chrome plating with a coating thickness ≥8μm. After a 240-hour salt spray test, it showed no rust or peeling, maintaining its metallic luster for a long time, avoiding the fading and cheap-looking issues of ordinary plastic bases.
• Reflector: Features a built-in high-refractive-index PC reflector with a honeycomb textured surface. Even in the absence of a light source, it reflects ambient light to create a prominent red warning area, meeting the requirement of "visible distance of reflective devices ≥ 100 meters" in the *Motorcycle Safety Technical Specifications*.

As the core light signaling device at the rear of the vehicle, this taillight assembly integrates three major functions: taillight (parking light) + brake light + turn signal, and all performance aspects meet the requirements of GB 7258-2017 *Motorcycle Operation Safety Technical Conditions* and the 2025 edition of the *Motorcycle Light Signaling Device Specifications*.

• Taillight (Parking Light):
  - The light source is a 12V/5W halogen bulb with a luminous intensity ≥ 20cd (daytime) and ≥ 5cd (nighttime). When activated, it allows for clear identification of the vehicle's outline from 50 meters away and is linked to the headlights—automatically illuminating when the headlights are on to prevent the rider from forgetting to turn on the parking lights.
• Brake Lights:
  - Employs 12V/21W high-brightness halogen bulbs. They illuminate immediately when the brake pedal travel reaches 20%, and reach peak intensity (≥600cd) at 50% travel. In bright sunlight, visibility remains ≥30 meters. The brightness ratio between the brake lights and taillights is 5:1, ensuring clear brake signals and preventing misjudgment by following vehicles.
• Turn Signals:
  - Integrates a 12V/10W amber turn signal on the left side. The flashing frequency is stable at 1.5±0.5Hz, with a luminous intensity ≥400cd. It meets the standard of "turn signal visibility angle ≥150° (horizontal) and ≥30° (vertical)," effectively alerting vehicles to the side and behind.

• Vibration Test: Passed a 2-hour vibration test at a frequency of 10-500Hz and an acceleration of 5g. No internal wiring was loose, and no bulbs detached.
• Waterproof Test: Achieved IP67 protection. After immersion in 1 meter of water for 30 minutes, no water entered the light assembly, and it functioned normally, capable of withstanding heavy rain and car washes.
• Lifespan Test: Halogen bulbs have a rated lifespan of ≥500 hours and can operate stably for 2-3 years under normal use, far exceeding the 100-hour lifespan of ordinary inferior bulbs.

This taillight assembly is a "non-destructive replacement" for models such as the Haojue HJ125-8E/8F and Suzuki GN125-2F. Its mounting holes and circuit plugs are completely identical to the original parts, requiring no frame modification or wire cutting. Ordinary riders can easily replace it themselves.

1. Prepare Tools: Phillips screwdriver, 8mm wrench, insulating tape (for backup);
2. Power Off Operation: Turn off the motorcycle's power and remove the key to avoid short circuit risk;
3. Remove the Old Light: Use a screwdriver to remove the two fixing screws on the taillight base, unplug the circuit connector, and remove the old light assembly;
4. Install the New Light: Connect the new light assembly's circuit connector to the original vehicle wiring harness (the connector is designed to prevent incorrect insertion), align it with the mounting holes, and tighten with screws, controlling the torque to 5 N·m (avoid overtightening to prevent damage to the base);
5. Functional Test: Turn on the power and test the taillight, brake light, and turn signals in sequence to ensure they function properly. Once confirmed to be working correctly, the installation is complete.

Note: If flickering occurs after installation, it is usually due to poor connector contact; simply unplug and replug the connectors. If the problem persists, it is recommended to consult a professional repair technician.

For classic cruiser motorcycles like the Haojue HJ125-8E and Suzuki GN125-2F, which have been on the market for many years, high-quality original factory parts are key to extending the model's lifespan. This taillight assembly not only solves the pain points of "difficulty in finding original parts and safety concerns with inferior parts," but also allows riders to continue enjoying the cruiser riding experience with its combination of "retro appearance + reliable performance."

User feedback indicates its core advantages are concentrated in three points: "consistent with the original motorcycle style," "easy installation," and "high durability." One HJ125-8E user reported that after replacing the taillight, there were no fading or water damage issues after more than a year of use, and the brake light brightness was indistinguishable from a new motorcycle. Retro modification enthusiasts believe it better suits the "nostalgic feel" of cruiser motorcycles than LED aftermarket lights, and also has lower maintenance costs.

In today's era of large-displacement, intelligent motorcycles, this taillight assembly stands out as a "retro guardian"—it doesn't pursue flashy features, but instead perfects the three core requirements of "safety, durability, and compatibility." For riders who choose cruiser motorcycles, the joy of riding lies in the "slower, more refined experience," and this taillight assembly embodies that refined quality in its details: it sits quietly at the rear, providing stable light for every commute, while its classic design perpetuates the unique charm of cruiser motorcycles.