Standard Ignition RY-111 Engine Control Module Relay

Engine Control Module Relay for Ford and Mercury Applications

The Standard Ignition RY-111 is an engine control module (ECM) relay built for 12-volt systems that need reliable switching performance in demanding underhood conditions. It is a direct-fit relay for a wide range of Ford, Mercury, and Chrysler applications, including Ford F-150, Ranger, Mustang, and Mercury Cougar models.

Key Features

• Engine control module (ECM) relay for 12-volt electrical systems
• 15 amp amperage rating
• Female square connector with 1 connector and 4 male blade terminals
• Composite housing helps protect against heat and harsh underhood exposure
• Brass or copper contacts are used where specified for wear resistance
• Standard Ignition RY-111 for service replacement applications

Detailed Product Overview

Standard Ignition RY-111 is engineered as a relay for engine management circuits that require consistent electrical switching. The relay uses a square female connector and blade-style terminals for the specified vehicle applications, and its construction is manufactured to strict quality requirements. Standard Ignition produces this part under TS16949 and ISO9001 certified processes, with quality control maintained from component sourcing through final assembly. This part cross-references Gates 19841 for the same application.

Compatible With 1983-1989 Ford Ranger, 1984-1986 Ford Mustang, 1984-1987 Ford Thunderbird, 1985-1989 Ford F-150, and 1984-1985 Mercury Cougar applications, among others in the listed fitment range. The RY-111 also serves select Ford Escort, Tempo, E-Series van, Bronco II, and Mercury Topaz applications, making it a practical replacement for common ECM relay service needs.

What This Relay Helps Address

• Intermittent engine control power delivery
• No-start conditions related to relay failure
• Electrical switching issues in the ECM circuit
• Heat-related relay degradation under the hood
• Worn relay contacts causing inconsistent operation

Installation Notes and Tips

Verify connector shape, terminal count, amperage rating, and voltage before installation. Confirm the vehicle’s original relay style and compare the part number against the application listing for Ford F-150, Ranger, Mustang, Mercury Cougar, and other listed models. Because this relay is not continuous duty, use it only in the specified engine control relay application and inspect the connector terminals for corrosion or heat damage before replacement.

Quality Assurance

Standard Ignition manufactures this relay under TS16949 and ISO9001 certified quality systems. The RY-111 is built to meet stringent production standards for fit and electrical performance across the listed vehicle applications.