HomeElectrical, Lighting and Body > RelaysStandard Ignition RY-49 Anti-Theft Relay
Part #: RY-49

Standard Ignition RY-49 Anti-Theft Relay

64 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Chevrolet, Oldsmobile, and Cadillac, Regal, Century, Corvette, Toronado, 98, Custom Cruiser, Cutlass Calais, Cutlass Ciera, Cutlass Cruiser, Cutlass Supreme, Delta 88, Firenza, Omega, Cutlass, Electra, Estate Wagon, LeSabre, Riviera, Commercial Chassis, DeVille, Fleetwood, Cutlass Salon, and Starfire
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Reliable Anti-Theft Relay for Buick, Cadillac, Chevrolet, and Oldsmobile

The Standard Ignition RY-49 Anti-Theft Relay is designed to provide dependable electrical control for your vehicle's security system. Engineered for select Buick, Cadillac, Chevrolet, and Oldsmobile models, this relay ensures proper operation of your anti-theft system with a 12-volt rating and a 20-amp amperage capacity.

Key Features of Standard Ignition RY-49 Anti-Theft Relay

  • Amperage rating: 20 amps for consistent electrical performance
  • 12-volt operating voltage compatible with most automotive systems
  • Female rectangular connector with one connector for secure fitment
  • Four male blade terminals for reliable electrical connections
  • Designed specifically for anti-theft relay functions
  • No mounting brackets included for flexible installation options
  • Continuous duty: No, suitable for intermittent relay operation

Detailed Product Description

The Standard Ignition RY-49 is an anti-theft relay built to meet the electrical demands of various GM vehicles, including Buick Century, Cadillac DeVille, Chevrolet Corvette, and Oldsmobile Cutlass models. Its 20-amp amperage rating and 12-volt voltage ensure compatibility with factory wiring harnesses and security systems. The relay features a female rectangular connector with one connector quantity and four male blade terminals, providing a secure and stable connection. This relay is designed for intermittent use within the anti-theft system, helping to control electrical circuits that prevent unauthorized vehicle operation.

Common Applications and Issues Addressed

  • Replacement for faulty or damaged anti-theft relays in Buick, Cadillac, Chevrolet, and Oldsmobile vehicles
  • Resolves intermittent starting problems related to anti-theft system failures
  • Helps restore proper function to security system electrical circuits
  • Prevents unauthorized engine start by controlling relay activation
  • Addresses relay-related electrical faults causing vehicle immobilizer issues

Installation Notes and Tips

  • Verify vehicle compatibility with Buick, Cadillac, Chevrolet, or Oldsmobile models listed before installation
  • Ensure the relay connector matches the female rectangular connector type with one connector
  • Check that the relay terminals align with the blade terminal type and quantity for proper fit
  • Installation does not include mounting brackets; secure relay appropriately within the vehicle
  • Disconnect the battery before replacing the relay to avoid electrical shorts

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for reliable performance. The RY-49 Anti-Theft Relay undergoes rigorous testing to ensure durability and electrical integrity. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.

BrandStandard Ignition
Part NumberRY-49
Amperage Rating20 A
Connector GenderFemale
Connector ShapeRectangular
ContentsRelay
Continuous DutyNo
FunctionsRelay
Mounting Bracket(s) IncludedNo
Terminal GenderMale
Terminal TypeBlade
Voltage12

This part fits 64 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1987BuickRegalN/A4 Blade Term.
1986BuickCenturyN/AOE No. 1616422
1986BuickRegalN/A4 Blade Term.
1985BuickCenturyN/AOE No. 1616422
1985BuickRegalN/A4 Blade Term.
1985ChevroletCorvetteN/A
1984BuickCenturyN/AOE No. 1616422
1984BuickRegalN/A4 Blade Term.
1984ChevroletCorvetteN/A
1984OldsmobileToronadoN/A4 Blade Term.
1983BuickCenturyN/AOE No. 1616422
1983BuickRegalN/A4 Blade Term.
1983Oldsmobile98N/A4 Blade Term.
1983OldsmobileCustom CruiserN/A4 Blade Term.
1983OldsmobileCutlass CalaisN/A4 Blade Term.
1983OldsmobileCutlass CieraN/A4 Blade Term.
1983OldsmobileCutlass CruiserN/A4 Blade Term.
1983OldsmobileCutlass SupremeN/A4 Blade Term.
1983OldsmobileDelta 88N/A4 Blade Term.
1983OldsmobileFirenzaN/A4 Blade Term.
1983OldsmobileOmegaN/A4 Blade Term.
1983OldsmobileToronadoN/AOE No. 1616422; 4 Blade Term.
1982BuickCenturyN/AOE No. 1616422
1982BuickRegalN/A4 Blade Term.
1982ChevroletCorvette5.7LV8N/A
1982Oldsmobile98N/A4 Blade Term.
1982OldsmobileCustom CruiserN/A4 Blade Term.
1982OldsmobileCutlass CalaisN/A4 Blade Term.
1982OldsmobileCutlass CieraN/A4 Blade Term.
1982OldsmobileCutlass CruiserN/A4 Blade Term.
1982OldsmobileCutlass SupremeN/A4 Blade Term.
1982OldsmobileDelta 88N/A4 Blade Term.
1982OldsmobileFirenzaN/A4 Blade Term.
1982OldsmobileOmegaN/A4 Blade Term.
1982OldsmobileToronadoN/AOE No. 1616422; 4 Blade Term.
1981ChevroletCorvette5.7LV8N/A
1981Oldsmobile98N/A4 Blade Term.
1981OldsmobileCustom CruiserN/A4 Blade Term.
1981OldsmobileCutlassN/A4 Blade Term.
1981OldsmobileCutlass CalaisN/A4 Blade Term.
1981OldsmobileCutlass CruiserN/A4 Blade Term.
1981OldsmobileCutlass SupremeN/A4 Blade Term.
1981OldsmobileDelta 88N/A4 Blade Term.
1981OldsmobileOmegaN/A4 Blade Term.
1981OldsmobileToronadoN/A4 Blade Term.
1980BuickCentury4.9LV8N/A
1980BuickLeSabreN/A
1980BuickRivieraN/A
1980CadillacCommercial Chassis6.0LV8N/A
1980CadillacDeVilleN/AOE No. 1616422
1980CadillacFleetwoodN/AOE No. 1616422
1980Oldsmobile98N/A
1980OldsmobileCustom CruiserN/A
1980OldsmobileCutlassN/A
1980OldsmobileCutlass CalaisN/A
1980OldsmobileCutlass CruiserN/A
1980OldsmobileCutlass SalonN/A
1980OldsmobileCutlass SupremeN/A
1980OldsmobileDelta 88N/A
1980OldsmobileOmegaN/A
1980OldsmobileStarfireN/A
1980OldsmobileToronadoN/A
1979BuickLeSabreN/A
1979BuickRivieraN/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:

1616422198751R126156-172589057688AR197AR319R6000RAC1909

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