Description
Product Overview
The DENSO Fog Light Relay by Sixity Auto is engineered for precise fog‑light control on Toyota Tundra trucks spanning model years 2003‑2006. Featuring an automatic operation mode, the relay activates fog lights when voltage drops, enhancing visibility in low‑visibility conditions. Constructed with a robust screw‑type connector and a compact 2.5 × 2 × 2 inch housing, it mounts securely on a DIN rail, saving space in the engine compartment. The unit complies with OE specifications, ensuring it meets the same standards as original equipment, and carries the Sixity Auto brand reputation for durability.
Usage

Designed for both professional mechanics and DIY enthusiasts, this relay fits seamlessly into the existing wiring harness of the Tundra’s fog‑light circuit. It is ideal for drivers who frequently encounter rain, fog, or night‑time driving in rural areas. The automatic mode eliminates the need for manual switching, allowing the driver to focus on the road while the relay manages illumination based on voltage thresholds.
Why Choose Us
Sixity Auto delivers genuine DENSO parts that match OEM quality, backed by rigorous testing for temperature resistance and vibration durability. Each relay arrives in original packaging with all necessary hardware, guaranteeing a hassle‑free replacement. Our commitment to authenticity means you receive a part that integrates perfectly with your vehicle’s electrical system, reducing the risk of faults and extending the lifespan of your fog‑light assembly.
Key Features
- Automatic activation for consistent fog‑light performance
- DIN rail mounting saves space and simplifies installation
- OE‑compliant design ensures OEM‑level reliability
- Screw‑type connectors provide secure, vibration‑resistant connections
- Compact dimensions (2.5 x 2 x 2 inches) fit tight engine bays
FAQ
Is this relay a direct replacement for the original fog‑light relay?
Yes, the DENSO Fog Light Relay is engineered as a direct OEM replacement, matching the original part number and specifications for Toyota Tundra models from 2003 to 2006.
Can I install the relay myself without professional tools?
The relay uses standard screw connectors and DIN rail mounting, allowing most DIY owners with basic hand tools to install it safely following the included wiring diagram.
What voltage range does the automatic mode operate within?
The relay activates the fog lights when the system voltage falls below 12.5 V and deactivates above 13.5 V, providing reliable operation during low‑voltage conditions.
Does the relay require any programming or configuration?
No additional programming is needed; the relay is plug‑and‑play and works immediately after proper wiring.
Is the relay covered by a warranty?
Yes, Sixity Auto offers a one‑year limited warranty covering defects in materials and workmanship.








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