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Hella Direction Indicator Light - 2SW 357 029-121

Hella Direction Indicator Light - 2SW 357 029-121

The Hella Direction Indicator Light (2SW 357 029-121) is a high-quality automotive signal componen...

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eBayHELLA VALUEFIT Direction Indicator - LED - 24V 2SW357029-121
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Product Information

Full details

The Hella Direction Indicator Light (2SW 357 029-121) is designed for commercial vehicles and heavy-duty applications requiring a reliable 24V signaling solution. This unit provides OE-quality performance with integrated taillight functionality, ensuring optimal road safety and compliance. While it offers excellent durability and precision engineering, users should note that it requires a manual wiring connection via open cable ends rather than a plug-and-play harness.

All features

Model Part Number2SW 357 029-121
BrandHella

Extended Product Information

FAQs

Is this light compatible with 12V cars?

No, this light is specifically designed for 24V commercial vehicle systems.

Does this unit include the mounting bolts?

The unit features a bolted mounting type, but specific hardware is typically sourced based on the mounting surface thickness.

What ECE standards does this meet?

This light complies with R6 (direction indicators) and R7 (front and rear position lamps).

Can I use this as a replacement for standard bulb-based indicators?

Yes, but you may need to ensure your flasher relay supports the lower power consumption of LED components.

How do I ensure the wiring is waterproof?

Use heat-shrink tubing with adhesive lining over your wire connections to prevent corrosion from moisture.

Troubleshooting

Light does not illuminate

Check the 24V power supply and ensure your wire-to-wire connections are secure and not oxidized.

Fast flashing (hyper-flashing)

Verify that your flasher relay is compatible with the LED load, or install an appropriate resistor if the vehicle's system expects a higher draw.

Pros and Cons

Pros

  • High-durability construction suitable for commercial use
  • Dual-functionality saves mounting space
  • Meets strict ECE safety standards
  • Compact dimensions allow for versatile placement

Cons

  • Requires manual wiring (open cable ends)
  • Not compatible with 12V passenger vehicle electrical systems
  • Requires specific mounting hardware (bolts) not always included

Setup, Compatibility & Care

Installation of the Hella indicator light requires basic automotive electrical knowledge due to the open cable ends. Ensure your vehicle system is outputting a stable 24V current before connection.

  1. Mounting: Use the integrated bolt holes to secure the unit to a flat surface on the vehicle frame or body.
  2. Wiring: Connect the open ends to the vehicle harness, ensuring proper insulation and waterproofing for all spliced connections.
  3. Testing: Once wired, activate the indicator and taillight circuits independently to verify correct polarity and function.
  4. Care: Clean the lens periodically using a soft cloth and mild soap. Avoid high-pressure washers directly against the housing seals to ensure long-term integrity.

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