Standard Ignition RY-874 HVAC Automatic Temperature Control (ATC) Relay

Overview of Standard Ignition HVAC ATC Relay RY-874

The Standard Ignition HVAC Automatic Temperature Control (ATC) Relay RY-874 is designed for reliable operation in Hyundai and Kia vehicles. This relay supports the HVAC system by managing electrical current flow, ensuring proper temperature control in models like the Hyundai Tucson and Kia Spectra.

• Amperage rating of 25 amps for consistent performance
• Female rectangular connector with one connector for secure fit
• Includes mounting bracket for easy installation
• Four male blade terminals for reliable electrical connections
• Operates at 12 volts, compatible with standard automotive electrical systems
• Continuous duty: No, designed for intermittent relay functions

Technical Details and Features

The RY-874 relay from Standard Ignition features a 25-amp amperage rating suitable for HVAC automatic temperature control circuits. It includes a female rectangular connector with a single connection point, ensuring compatibility with the vehicle’s wiring harness. The relay comes with a mounting bracket, simplifying secure attachment within the HVAC system. Four male blade terminals provide stable and durable electrical contacts, supporting the relay’s switching functions at 12 volts. This relay is not rated for continuous duty, aligning with its role in cycling HVAC components rather than constant operation.

Compatible Vehicles and Applications

This HVAC ATC relay is compatible with select Hyundai and Kia models, specifically the Hyundai Tucson, Kia Spectra, and Kia Spectra5. It is designed to replace the original relay in these vehicles’ HVAC systems, helping to maintain proper automatic temperature control functionality.

• Restores HVAC automatic temperature control relay function
• Resolves intermittent HVAC blower or temperature control issues
• Prevents relay-related electrical faults in HVAC circuits
• Addresses relay failure symptoms such as no heat or no air conditioning

Installation Notes and Tips

When installing the Standard Ignition RY-874 relay, ensure the vehicle’s ignition is off and the battery is disconnected to prevent electrical shorts. Use the included mounting bracket to secure the relay firmly in place. Verify the connector orientation matches the female rectangular connector on the relay, and confirm all four blade terminals are properly seated. After installation, test the HVAC system to confirm proper relay operation and temperature control functionality.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The RY-874 relay undergoes quality control testing to ensure reliable performance in Hyundai and Kia HVAC systems. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship.