Arnott RH-3720 Headlight Level Sensor - Rear Left

Reliable Headlight Level Sensor for Cadillac, Chevrolet, and GMC

The Arnott RH-3720 headlight level sensor is designed to maintain optimal headlight alignment for select Cadillac, Chevrolet, and GMC models. This new sensor ensures accurate leveling to improve nighttime visibility and vehicle safety.

• Connector color: Black for easy identification
• Pin-type terminals with 3 male terminals for secure electrical connection
• Single oval-shaped female connector for precise fitment
• Standard grade type for consistent performance
• Compatible with Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, GMC Yukon, and Yukon XL

Product Details and Specifications

The Arnott RH-3720 headlight level sensor features a black connector with an oval shape and a single female connector interface. It uses three male pin terminals to ensure a reliable electrical connection with the vehicle’s lighting system. This sensor is manufactured new and meets standard grade specifications, providing dependable operation without remanufactured components. The design is tailored specifically for luxury SUVs such as the Cadillac Escalade and Escalade ESV, as well as full-size SUVs like the Chevrolet Tahoe and GMC Yukon series, ensuring compatibility and proper function.

Common Applications and Problem Resolution

• Corrects headlight misalignment issues caused by faulty sensors
• Restores automatic headlight leveling functionality
• Eliminates uneven or inconsistent headlight beam patterns
• Prevents headlight glare that can impair driver visibility
• Supports vehicle safety systems dependent on accurate sensor data

Installation Notes and Tips

When installing the Arnott RH-3720 headlight level sensor, ensure the vehicle’s electrical system is powered off to avoid damage. The sensor’s oval-shaped black connector should align precisely with the vehicle’s wiring harness. No mounting hardware is included, so retain original fasteners during replacement. Verify the sensor’s orientation and secure connection to maintain proper headlight leveling operation.

Quality Assurance and Warranty

This Arnott headlight level sensor is a new, standard-grade component designed to meet OEM specifications. While specific warranty details are not provided, Arnott products typically undergo quality control testing to ensure reliability and fitment accuracy for Cadillac, Chevrolet, and GMC vehicles. Using the RH-3720 part number guarantees compatibility with the listed models and helps maintain vehicle lighting system integrity.