Standard Ignition RY-288 Engine Control Module Relay

ECM Relay for Mazda and Ford Applications

Standard Ignition RY-288 is an engine control module relay built for 12-volt systems that need reliable switching under hood. It uses a female square connector, 4 male blade terminals, and a 20 amp amperage rating for direct replacement service in a range of Mazda, Ford, and Mercury vehicles.

Key Features

• 12-volt ECM relay for engine control circuit operation
• 20 amp amperage rating for specified electrical loads
• Female square connector with 4 male blade terminals
• Composite housing helps protect against heat and harsh underhood conditions
• Brass or copper contacts are used where specified for wear resistance
• Manufactured under TS16949 and ISO9001 certified processes

Detailed Description

This Standard Ignition RY-288 relay is designed for vehicles that rely on an engine control module relay to manage power delivery in the engine electrical system. It is a direct-fit style replacement for applications including 1990-1996 Mazda Miata, 1990-1996 Mazda Protege, 1991-1996 Ford Escort, and 1991-1996 Mercury Tracer, along with other listed Mazda and Ford models such as Mazda 626, Mazda MX-6, Mazda 323, Mazda 929, Mazda RX-7, Ford Probe, Ford Aspire, Mazda MPV, Mazda Millenia, and 1981 Ford Mustang. This part number, RY-288, is built to match the specified connector and terminal layout for service on the correct vehicle.

This part cross-references Gates 19211 for the same application.

Common Problems It Can Help Address

• Intermittent ECM power delivery
• No-start conditions caused by relay failure
• Engine stalling from unstable relay switching
• Electrical faults related to heat-damaged relay housings
• Contact wear that can interrupt circuit operation

Installation Notes and Tips

Verify the connector shape, terminal count, and amperage rating before installation. Confirm the vehicle’s relay location and compare the original part number or OE reference, including B6S8-18-811 where listed for 1990-1996 Mazda Protege. RY-288 uses a female connector with male blade terminals, so the replacement should seat fully and lock into the harness without forcing the terminals.

Quality Assurance

Standard Ignition manufactures this relay under controlled quality processes in TS16949 and ISO9001 certified plants. The brand states that materials and construction are selected for harsh underhood temperatures and demanding electrical service, helping support consistent fit and function across the listed Mazda Miata, Ford Escort, and related applications.