Standard Ignition RY-1803 HVAC Relay

HVAC Relay for Nissan and Infiniti Applications

Standard Ignition RY-1803 is a 12-volt HVAC relay used for air condition control relay operation in select Nissan and INFINITI vehicles. It uses a female connector with a polygon shape, 4 male blade terminals, and a 30 amp amperage rating for direct-fit electrical service.

Compatible With Nissan GT-R, 370Z, TITAN, Armada, Pathfinder, Juke, NV3500, Altima, Versa, and select INFINITI G37, FX50, M35, M45, and Q60 applications. Standard Ignition RY-1803 is a practical replacement when the original relay no longer switches the A/C control circuit correctly.

• 12 V HVAC relay for air condition control relay function
• 30 A amperage rating for electrical switching service
• 1 female connector with polygon shape
• 4 male blade terminals for vehicle-specific connection
• Direct replacement for select Nissan and INFINITI HVAC systems

Fitment and Cross References

Fits 2009-2021 Nissan GT-R, N/A. Fits 2009-2020 Nissan 370Z, N/A. Fits 2013-2015 Nissan Armada, N/A, 4 Term. Fits 2013-2015 Nissan Pathfinder, N/A. Fits 2010-2015 Nissan TITAN, N/A. Fits 2004-2005 Nissan TITAN, N/A. Fits 2014 INFINITI Q60, N/A, w/ Shroud. Fits 2011-2014 Nissan Juke, N/A. Fits 2012-2014 Nissan NV3500, N/A. Fits 2008-2011 INFINITI G37, N/A. Fits 2007-2011 Nissan Altima, N/A. Fits 2007-2011 Nissan Versa, N/A. Fits 2009-2010 INFINITI FX50, N/A. Fits 2006-2010 INFINITI M35, N/A. Fits 2006-2010 INFINITI M45, N/A.

This part cross-references Rostra Powertrain Controls 60-0152 and Standard Ignition RY-1803 for the same application.

What It Helps Resolve

• Air conditioning compressor relay switching problems
• Intermittent HVAC control circuit operation
• No A/C engagement caused by relay failure
• Electrical contact wear in the HVAC relay circuit
• Relay-related cooling system control faults

Installation Notes and Tips

Verify the connector shape, terminal count, and amperage rating before installation. Match the relay to the vehicle’s HVAC control circuit and confirm the application by year, make, and model, especially on Nissan GT-R, 370Z, and TITAN platforms. Inspect the relay socket for heat damage or corrosion before installing the replacement.

Quality Assurance

Standard Ignition replacement electrical components are built for service in vehicle-specific applications and are commonly used for direct-fit repair work on Nissan and INFINITI HVAC systems.