Standard Ignition RY-610 Seat Belt Warning Relay

Seat Belt Warning Relay for Select Ford and Mercury Vehicles

Standard Ignition RY-610 is a 12-volt seat belt warning relay built for select Ford, Mercury, and Lexus applications. It uses a 4-blade male terminal layout with a single rectangular female connector and a 20 amp amperage rating for the specified vehicle circuits.

Compatible With 1982-1997 Ford Thunderbird, Escort, Bronco II, F-250, and E-350 Econoline applications, plus select Mercury Cougar, Tracer, Grand Marquis, Lynx, Marquis, and LN7 models. Standard Ignition RY-610 also cross-references Bosch 16090 for the same application.

Key Features

• Seat belt warning relay for electrical and body system service
• 12-volt electrical specification
• 20 amp amperage rating
• 1 rectangular female connector
• 4 male blade terminals
• Composite housing for temperature and underhood exposure resistance
• Brass or copper contacts where specified for wear resistance
• Manufactured under TS16949 and ISO9001 certified processes

Detailed Description

Standard Ignition RY-610 is a replacement seat belt warning relay engineered for vehicles that use a 12-volt relay circuit with a rectangular connector and blade-style terminals. The relay construction uses durable composite materials and quality-controlled internal components to support consistent electrical operation in demanding automotive environments. This part number, RY-610, is listed for a wide range of Ford and Mercury models, including 1990-1997 Ford Thunderbird, 1986-1996 Ford Escort, 1990 Ford Bronco II, 1989 Ford F-250, 1986-1987 Ford E-350 Econoline and E-350 Econoline Club Wagon, 1991-1996 Mercury Cougar, 1994-1996 Mercury Tracer, 1988 Mercury Grand Marquis, 1986-1987 Mercury Lynx, 1984 Mercury Marquis, and 1982 Mercury LN7. It is also listed for 2007 Lexus GS450h and 1987-1988 Mercury Cougar with passive restraint system.

What It Helps Address

• Seat belt warning relay failure
• Intermittent warning chime or indicator operation
• No response from the seat belt warning circuit
• Electrical issues caused by worn relay contacts
• Relay housing damage from heat or engine-bay exposure

Installation Notes and Tips

Verify connector shape, terminal count, and voltage before installation. Match the vehicle’s original relay configuration to the RY-610 specifications, including the 1 female rectangular connector and 4 male blade terminals. Confirm fitment by year, make, model, and any notes such as passive restraint system applications before replacing the relay.

Quality Assurance

Standard Ignition manufactures this relay under controlled quality requirements with TS16949 and ISO9001 certified production systems. The brand states that component selection and final assembly are managed through the full manufacturing process to help ensure the correct part is supplied for the specified vehicle application.