HomeElectrical, Lighting and Body > RelaysStandard Ignition RY-225 Headlight Dimmer Switch Relay
Part #: RY-225

Standard Ignition RY-225 Headlight Dimmer Switch Relay

⚙️ 98 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, Suzuki, Ford, and Mercury, MPV, Protege, Sidekick, X-90, Escort, Tracer, MX-3, Probe, 323, RX-7, Samurai, 929, 626, MX-6, B2200, and B2600
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Reliable Headlight Dimmer Switch Relay for Select Vehicles

The Standard Ignition RY-225 headlight dimmer switch relay is designed to provide consistent electrical performance for your vehicle's lighting system. Engineered for compatibility with various Ford, Mazda, Mercury, and Suzuki models, this relay ensures proper headlight dimming functionality.

  • Amperage rating of 30 amps for stable electrical load handling
  • 12-volt relay suitable for automotive lighting circuits
  • Female square connector with one connector for secure fit
  • Four male blade terminals for reliable electrical connections
  • Designed specifically as a headlight dimmer switch relay
  • Compact design without mounting brackets for flexible installation

Technical Details and Compatibility

The RY-225 relay operates at 12 volts and supports a continuous duty rating of no, meaning it is intended for intermittent use typical of headlight dimmer applications. It features a female square connector with one connector quantity and four male blade terminals, ensuring compatibility with the original wiring harness. This relay is compatible with a range of vehicles including Ford Escort, Mercury Tracer, Mazda 323, 626, 929, MPV, MX-3, MX-6, Probe, Protege, RX-7, and Suzuki B2200, B2600, Samurai, Sidekick, and X-90 models.

Common Applications and Problem Resolution

  • Restores proper headlight dimming function in vehicles experiencing relay failure
  • Replaces faulty or intermittent headlight dimmer switch relays causing lighting issues
  • Addresses electrical problems related to headlight flickering or non-responsive dimming
  • Ensures consistent power delivery to headlights for safe night driving
  • Supports maintenance and repair of aging electrical components in Ford, Mazda, Mercury, and Suzuki vehicles

Installation Notes and Tips

Installation of the Standard Ignition RY-225 relay requires matching the female square connector and blade terminals to the vehicle’s existing wiring harness. No mounting brackets are included, so secure the relay in a suitable location using existing hardware or zip ties. Verify the 12-volt system voltage before installation and ensure the vehicle’s electrical system is powered off to prevent shorts. Consult the vehicle’s service manual for specific relay location and wiring diagrams.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The RY-225 headlight dimmer switch relay undergoes rigorous testing to ensure proper function within specified amperage and voltage ratings. Warranty coverage details should be confirmed with the product documentation or supplier, as Standard Ignition typically offers limited warranties on electrical components.

BrandStandard Ignition
Part NumberRY-225
Amperage Rating30 A
Connector GenderFemale
Connector ShapeSquare
ContentsRelay
Continuous DutyNo
FunctionsRelay
Mounting Bracket(s) IncludedNo
Terminal GenderMale
Terminal TypeBlade
Voltage12

This part fits 98 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1999MazdaProtegeN/A
1998MazdaMPVN/A
1998MazdaProtegeN/A
1998SuzukiSidekickN/A
1998SuzukiX-90N/A
1997FordEscortN/A
1997MazdaMPVN/A
1997MazdaProtegeN/A
1997MercuryTracerN/A
1997SuzukiSidekickN/A
1997SuzukiX-90N/A
1996FordEscortN/A
1996MazdaMPVN/A
1996MazdaMX-3N/A
1996MazdaProtegeN/A
1996MercuryTracerN/A
1996SuzukiSidekickN/A
1996SuzukiX-90N/A
1995FordEscortN/A
1995FordProbeN/A
1995Mazda323N/A
1995MazdaMPVN/A
1995MazdaMPV3.0LV6N/A
1995MazdaMX-31.6LL4N/A
1995MazdaMX-3N/A
1995MazdaRX-7N/A
1995MercuryTracerN/A
1995SuzukiSamuraiN/A
1995SuzukiSidekickN/A
1994FordEscortN/A
1994FordProbeN/A
1994Mazda3231.6LL4N/A
1994Mazda323N/A
1994Mazda323N/A30 Amp Circuit Breaker
1994Mazda929N/A
1994MazdaMPVN/A
1994MazdaMX-3N/A
1994MazdaProtegeN/A
1994MazdaRX-7N/A
1994MercuryTracerN/A
1994SuzukiSamuraiN/A
1994SuzukiSidekickN/A
1993FordEscortN/A
1993FordProbeN/A
1993Mazda3231.6LL4N/A
1993Mazda323N/A
1993Mazda323N/A30 Amp Circuit Breaker
1993Mazda929N/A
1993MazdaMPVN/A
1993MazdaMX-3N/A
1993MazdaProtegeN/A
1993MazdaRX-7N/A
1993MercuryTracerN/A
1993MercuryTracer1.9LL4N/AIn Fuse Panel
1993SuzukiSamuraiN/A
1993SuzukiSidekickN/A
1992FordEscortN/A
1992Mazda323N/A
1992Mazda3231.6LL4N/A
1992Mazda323N/A30 Amp Circuit Breaker
1992Mazda626N/A
1992Mazda929N/A
1992MazdaMPVN/A
1992MazdaMX-3N/A
1992MazdaMX-6N/A
1992MazdaProtegeN/A
1992MercuryTracerN/A
1992SuzukiSamuraiN/A
1992SuzukiSidekickN/A
1991FordEscortN/A
1991Mazda3231.6LL4N/A
1991Mazda323N/A
1991Mazda3231.6LL4N/A30 Amp Circuit Breaker
1991Mazda626N/A
1991MazdaMPVN/A
1991MazdaMX-6N/A
1991MazdaProtegeN/A
1991MazdaRX-7N/A
1991MercuryTracerN/A
1991SuzukiSamuraiN/A
1991SuzukiSidekickN/A
1990FordProbeN/AExc. Canada
1990Mazda323N/A
1990Mazda3231.6LL4N/A
1990Mazda323N/A30 Amp Circuit Breaker
1990Mazda626N/A
1990MazdaMPVN/A
1990MazdaMX-6N/A
1990MazdaProtegeN/A
1990MazdaRX-7N/A
1990SuzukiSamuraiN/A
1989FordProbeN/A
1989FordProbeN/AExc. Canada
1989Mazda3231.6LL4N/A
1989MazdaB22002.2LL4N/A
1989MazdaB26002.6LL4N/A
1989MazdaMPVN/A
1989MazdaRX-7N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

193271R10972-JR65203-01572N13185080C103614856-15888330288922843AR374AR374SBAR454B09267740JR65R4136RAA1523RY225T

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.