Standard Ignition RY-1542 A/C Compressor Control Relay

Standard Ignition RY-1542 A/C Compressor Control Relay

Standard Ignition RY-1542 is a 12-volt A/C compressor control relay built for HVAC relay applications where reliable electrical switching is required. It features a female rectangular connector, four male blade terminals, and an included mounting bracket for secure installation in the vehicle’s relay location.

Key Features

• 12-volt A/C compressor control relay for HVAC systems
• Female rectangular connector with 4 male blade terminals
• Mounting bracket(s) included for proper fitment
• Relay function for compressor control circuit operation
• Direct replacement style for select Mazda applications

Fitment and Application

Compatible With select Mazda HVAC relay applications, including Fits 1999-2005 Mazda Miata, N/A; Fits 2000-2005 Mazda Miata, N/A, 30 Amp Circuit Breaker; Fits 1995-2002 Mazda Millenia, N/A; Fits 1988-1993 Mazda 626, N/A; Fits 1992-1993 Mazda MX-3, N/A; Fits 1988-1993 Mazda MX-6, N/A; and Fits 1990-1991 Mazda 929, N/A. This part cross-references Four Seasons 20207 for the same application. Standard Ignition RY-1542 is also referenced by AR7048 and R7047.

What This Relay Helps Address

• A/C compressor not engaging when the HVAC system calls for cooling
• Intermittent compressor operation caused by relay contact wear
• Noisy or inconsistent electrical switching in the compressor control circuit
• Faults related to a failed HVAC relay in Mazda Miata, Millenia, 626, MX-3, MX-6, or 929 applications
• Relay replacement needs during A/C electrical diagnosis

Installation Notes and Tips

Verify the connector style, terminal layout, and 12-volt specification before installation. Confirm the vehicle’s relay location and compare the existing part number, especially on Mazda Miata models with a 30 amp circuit breaker note. Inspect the surrounding HVAC wiring and terminals for heat damage, corrosion, or looseness before installing the new relay.

Quality Assurance

Standard Ignition supplies electrical components for service replacement applications, and this relay is built to match the listed connector, terminal, and mounting configuration for the specified vehicles.