Standard Ignition RY-603 Power Antenna Relay

Brand Standard Ignition RY-603
Amperage Rating 20 A
Connector Gender Female
Connector Shape Square
Continuous Duty No
Functions Relay
Mounting Bracket(s) Included No
Terminal Gender Male
Terminal Type Blade
Voltage 12
Fits Cadillac, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, and Volkswagen · 318 vehicles

OE-quality relay. Built to stringent standards for dependable electrical performance.

Composite housing. Helps protect against harsh temperatures and severe underhood conditions.

Brass or copper contacts. Where specified, they help extend wear for longer service life.

Cross-references Four Seasons 20118, 1R1459 and 56-1894 for the same application. See all 9.

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Power Antenna Relay for OE-Style Electrical Control

Standard Ignition RY-603 is a 12-volt power antenna relay built for vehicles that use a 6-blade terminal layout and a square female connector. With a 20-amp amperage rating and composite housing, it is suited for underhood electrical service where heat and vibration are part of the job.

Compatible With select Cadillac, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, and Volkswagen applications, including Cadillac Eldorado, Chevrolet Corvette, and Pontiac Bonneville. If you are replacing a failed power antenna relay on an OE-style system, RY-603 provides the correct connector style and terminal configuration for the listed vehicles.

Key Features

  • 12-volt power antenna relay
  • 20 A amperage rating
  • Female square connector with 1 connector interface
  • 6 male blade terminals
  • Composite housing for harsh temperature and underhood exposure
  • Brass or copper contacts where specified for wear resistance
  • Manufactured under TS16949 and ISO9001 certified quality systems

Detailed Description

Standard Ignition RY-603 is engineered as an OE-style replacement relay for power antenna circuits. The relay design uses a square connector, male blade terminals, and 12-volt electrical architecture to match the original configuration on supported vehicles. This makes it a practical choice for restoring antenna operation on models such as the Chevrolet Corvette, Pontiac Bonneville, and Cadillac Eldorado, as well as many Buick, Oldsmobile, GMC, and Chevrolet platforms listed in the fitment data.

This part cross-references Four Seasons 20118 for the same application. Standard Ignition RY-603 is also listed with interchange references including 1R1459 and AR185.

What It Is Used For

  • Restoring power antenna raise and lower function
  • Replacing a relay with burned or worn electrical contacts
  • Correcting intermittent antenna operation on 12-volt systems
  • Addressing connector mismatch on OE-style antenna relay service
  • Repairing electrical faults in underhood relay circuits

Installation Notes and Tips

  • Verify the connector shape, terminal count, and terminal gender before installation.
  • Confirm the vehicle uses a 6-blade relay layout and a 12-volt power antenna circuit.
  • Review fitment notes for specific applications, including Buick Roadmaster without bracket and Pontiac Bonneville with 6 blade terminals.
  • Inspect the antenna motor, wiring, and fuse circuit if the relay was damaged by an upstream electrical issue.
  • Match the OE number when servicing 2001 Cadillac Eldorado, OE No. 10059832 applications.

Quality Assurance

Standard Ignition manufactures this relay with composite housings and specified brass or copper contacts where applicable, using controlled production processes from component to finished part. The brand states its plants are TS16949 and ISO9001 certified, supporting consistent OE-style electrical replacement quality.

This part fits 318 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelBody TypeLitersCylindersPositionNotes
2002CadillacEldorado——4.6LV8N/A—
2001CadillacEldorado——4.6LV8N/AOE No. 10059832
1996BuickCentury————N/A—
1996BuickRegal————N/A—
1996BuickRoadmaster————N/AFitment Note: Without Bracket
1996ChevroletCorvette————N/A—
1996ChevroletCorvette——5.7LV8N/A—
1996ChevroletExpress 1500————N/A—
1996ChevroletExpress 2500————N/A—
1996ChevroletExpress 3500————N/A—
1996ChevroletG30————N/A—
1996ChevroletImpala————N/A—
1996GMCG3500————N/A—
1996GMCSavana 1500————N/A—
1996GMCSavana 2500————N/A—
1996GMCSavana 3500————N/A—
1995BuickCentury————N/A—
1995BuickRegal————N/A—
1995BuickRoadmaster————N/AFitment Note: Without Bracket
1995ChevroletCorvette——5.7LV8N/A—
1995ChevroletCorvette————N/A—
1995ChevroletG10————N/A—
1995ChevroletG20————N/A—
1995ChevroletG30————N/A—
1995ChevroletImpala————N/A—
1995GMCG1500————N/A—
1995GMCG2500————N/A—
1995GMCG3500————N/A—
1995OldsmobileCutlass Ciera————N/A—
1994BuickCentury————N/A—
1994BuickRegal————N/A—
1994BuickRoadmaster————N/AFitment Note: Without Bracket
1994ChevroletCaprice————N/A—
1994ChevroletCorvette————N/A—
1994ChevroletCorvette——5.7LV8N/A—
1994ChevroletG10————N/A—
1994ChevroletG20————N/A—
1994ChevroletG30————N/A—
1994ChevroletImpala————N/A—
1994ChevroletLumina————N/A—
1994GMCG1500————N/A—
1994GMCG2500————N/A—
1994GMCG3500————N/A—
1994OldsmobileCutlass Ciera————N/A—
1994OldsmobileCutlass Supreme————N/A—
1994PontiacGrand Prix——3.4LV6N/A—
1994PontiacGrand Prix——3.1LV6N/A—
1993BuickCentury————N/A—
1993BuickRegal————N/A—
1993BuickRoadmaster————N/AFitment Note: Without Bracket
1993ChevroletCaprice————N/A—
1993ChevroletCorvette——5.7LV8N/A—
1993ChevroletCorvette————N/A—
1993ChevroletLumina————N/A—
1993OldsmobileCutlass Ciera————N/A—
1993OldsmobileCutlass Supreme————N/A—
1993PontiacGrand Prix——3.4LV6N/A—
1993PontiacGrand Prix——3.1LV6N/A—
1992BuickCentury————N/A—
1992BuickRegal————N/A—
1992BuickRoadmaster————N/AFitment Note: Without Bracket
1992ChevroletCamaro————N/A—
1992ChevroletCaprice————N/A—
1992ChevroletCommercial Chassis——4.3LV6N/A—
1992ChevroletCommercial Chassis——5.0LV8N/A—
1992ChevroletCommercial Chassis——5.7LV8N/A—
1992ChevroletCorvette————N/A—
1992ChevroletLumina————N/A—
1992OldsmobileCustom Cruiser————N/A—
1992OldsmobileCutlass Ciera————N/A—
1992OldsmobileCutlass Supreme————N/A—
1992PontiacBonneville————N/A6 Blade Term.
1992PontiacFirebird————N/A—
1992PontiacGrand Prix————N/A—
1991BuickCentury————N/A—
1991BuickRegal————N/A—
1991BuickRoadmaster————N/A—
1991ChevroletCamaro————N/A—
1991ChevroletCaprice————N/A—
1991ChevroletCavalier————N/A—
1991ChevroletCommercial Chassis——5.7LV8N/A—
1991ChevroletCommercial Chassis——5.0LV8N/A—
1991ChevroletCorvette————N/A—
1991ChevroletLumina————N/A—
1991OldsmobileCustom Cruiser————N/A—
1991OldsmobileCutlass Calais————N/A—
1991OldsmobileCutlass Ciera————N/A—
1991OldsmobileCutlass Supreme————N/A—
1991OldsmobileDelta 88—Sedan——N/A—
1991Pontiac6000————N/A—
1991PontiacBonneville————N/A6 Blade Term.
1991PontiacFirebird————N/A—
1991PontiacGrand Am————N/A—
1991PontiacGrand Prix————N/A—
1991PontiacTempest————N/A—
1990BuickCentury————N/A—
1990BuickRegal————N/A—
1990ChevroletCamaro————N/A—
1990ChevroletCaprice————N/A—
1990ChevroletCavalier————N/A—
1990ChevroletCorvette————N/A—
1990ChevroletLumina————N/A—
1990OldsmobileCustom Cruiser————N/A—
1990OldsmobileCutlass Calais————N/A—
1990OldsmobileCutlass Ciera————N/A—
1990OldsmobileCutlass Supreme————N/A—
1990OldsmobileDelta 88—Sedan——N/A—
1990Pontiac6000————N/A—
1990PontiacBonneville————N/A6 Blade Term.
1990PontiacFirebird————N/A—
1990PontiacGrand Am————N/A—
1990PontiacGrand Prix————N/A—
1990PontiacTempest————N/A—
1989BuickCentury————N/A—
1989BuickRegal————N/A—
1989BuickSkyhawk————N/A—
1989ChevroletAstro————N/A—
1989ChevroletCamaro————N/A—
1989ChevroletCaprice————N/A—
1989ChevroletCavalier————N/A—
1989ChevroletCorvette————N/A—
1989GMCSafari————N/A—
1989OldsmobileCustom Cruiser————N/A—
1989OldsmobileCutlass Calais————N/A—
1989OldsmobileCutlass Ciera————N/A—
1989OldsmobileCutlass Supreme————N/A—
1989OldsmobileDelta 88—Sedan——N/A—
1989Pontiac6000————N/A—
1989PontiacBonneville————N/A6 Blade Term.
1989PontiacFirebird————N/A—
1989PontiacGrand Am————N/A—
1989PontiacGrand Prix————N/A—
1989PontiacLeMans————N/A—
1989PontiacSafari————N/A—
1989PontiacTempest————N/A—
1988BuickCentury————N/A—
1988BuickRegal————N/A—
1988BuickSkyhawk————N/A—
1988BuickSkylark————N/A—
1988CadillacCimarron————N/A—
1988CadillacFleetwood————N/Aw/ Skirt
1988ChevroletAstro————N/A—
1988ChevroletCamaro————N/A—
1988ChevroletCaprice————N/A—
1988ChevroletCavalier————N/A—
1988ChevroletCorvette————N/A—
1988GMCSafari————N/A—
1988OldsmobileCustom Cruiser————N/A—
1988OldsmobileCutlass Calais————N/A—
1988OldsmobileCutlass Ciera————N/A—
1988OldsmobileCutlass Supreme————N/A—
1988OldsmobileDelta 88————N/A—
1988OldsmobileFirenza————N/A—
1988Pontiac6000————N/A—
1988PontiacBonneville————N/A6 Blade Term.
1988PontiacFirebird————N/A—
1988PontiacGrand Am————N/A—
1988PontiacGrand Prix————N/A—
1988PontiacLeMans————N/A—
1988PontiacSafari————N/A—
1988PontiacTempest————N/A—
1987BuickCentury————N/A—
1987BuickRegal————N/A—
1987BuickSkyhawk————N/A—
1987BuickSkylark————N/A—
1987CadillacCimarron————N/A—
1987CadillacCommercial Chassis————N/A—
1987CadillacDeVille————N/A—
1987CadillacFleetwood————N/Aw/ Skirt
1987ChevroletAstro————N/A—
1987ChevroletCamaro————N/A—
1987ChevroletCaprice————N/A—
1987ChevroletCavalier————N/A—
1987ChevroletCorvette————N/A—
1987GMCSafari————N/A—
1987Oldsmobile98————N/A—
1987OldsmobileCalais————N/A—
1987OldsmobileCustom Cruiser————N/A—
1987OldsmobileCutlass————N/A—
1987OldsmobileCutlass Ciera————N/A—
1987OldsmobileCutlass Salon————N/A—
1987OldsmobileCutlass Supreme————N/A—
1987OldsmobileDelta 88————N/A—
1987OldsmobileFirenza————N/A—
1987Pontiac6000————N/A6 Blade Term.
1987PontiacBonneville————N/A6 Blade Term.
1987PontiacBonneville————N/A—
1987PontiacFirebird————N/A—
1987PontiacGrand Am————N/A—
1987PontiacGrand Prix————N/A—
1987PontiacSafari————N/A—
1987PontiacTempest————N/A—
1987VolkswagenGolf————N/A—
1986BuickCentury————N/A—
1986BuickRegal————N/A—
1986BuickSkyhawk————N/A—
1986BuickSkylark————N/A—
1986CadillacCimarron————N/A—
1986CadillacCommercial Chassis————N/A—
1986CadillacDeVille————N/A—
1986CadillacFleetwood————N/Aw/ Skirt
1986ChevroletCamaro————N/A—
1986ChevroletCaprice————N/A—
1986ChevroletCavalier————N/A—
1986ChevroletCorvette————N/A—
1986Oldsmobile98Regency———N/A—
1986Oldsmobile98Regency Brougham———N/A—
1986OldsmobileCalais————N/A—
1986OldsmobileCustom Cruiser————N/A—
1986OldsmobileCutlass————N/A—
1986OldsmobileCutlass Ciera————N/A—
1986OldsmobileCutlass Salon————N/A—
1986OldsmobileCutlass Supreme————N/A—
1986OldsmobileDelta 88————N/A—
1986OldsmobileFirenza————N/A—
1986Pontiac6000————N/A6 Blade Term.
1986PontiacBonneville————N/A—
1986PontiacFirebird————N/A—
1986PontiacGrand Prix————N/A—
1986PontiacParisienne————N/A—
1986VolkswagenGolf————N/A—
1985BuickCentury————N/A—
1985BuickRegal————N/A—
1985BuickSkyhawk————N/A—
1985CadillacCimarron————N/A—
1985CadillacCommercial Chassis————N/A—
1985CadillacFleetwood————N/A—
1985ChevroletCamaro————N/A—
1985ChevroletCaprice————N/A—
1985ChevroletCorvette————N/A—
1985ChevroletImpala——5.7LV8N/A—
1985ChevroletImpala——5.0LV8N/A—
1985ChevroletImpala——3.8LV6N/A—
1985ChevroletImpala——4.3LV6N/A—
1985Oldsmobile98——3.8LV6N/A—
1985Oldsmobile98——4.3LV6N/A—
1985Oldsmobile98——3.0LV6N/A—
1985OldsmobileCalais——3.0LV6N/A—
1985OldsmobileCalais——2.5LL4N/A—
1985OldsmobileCustom Cruiser————N/A—
1985OldsmobileCutlass————N/A—
1985OldsmobileCutlass Ciera————N/A—
1985OldsmobileCutlass Salon————N/A—
1985OldsmobileCutlass Supreme————N/A—
1985OldsmobileDelta 88————N/A—
1985OldsmobileFirenza——2.8LV6N/A—
1985OldsmobileFirenza——1.8LL4N/A—
1985OldsmobileFirenza——2.0LL4N/A—
1985OldsmobileToronado——5.7LV8N/A—
1985OldsmobileToronado——5.0LV8N/A—
1985PontiacFirebird————N/A—
1985PontiacParisienne————N/A—
1985VolkswagenGolf————N/A—
1984BuickCentury————N/A—
1984BuickLeSabre————N/A—
1984BuickRegal————N/A—
1984BuickSkyhawk————N/A—
1984CadillacCimarron————N/A—
1984ChevroletCamaro————N/A—
1984ChevroletCaprice——5.0LV8N/A—
1984ChevroletCorvette————N/A—
1984Oldsmobile98——5.7LV8N/A—
1984Oldsmobile98——5.0LV8N/A—
1984OldsmobileCustom Cruiser————N/A—
1984OldsmobileCutlass Calais————N/A—
1984OldsmobileCutlass Ciera————N/A—
1984OldsmobileCutlass Supreme————N/A—
1984OldsmobileDelta 88————N/A—
1984OldsmobileFirenza——2.0LL4N/A—
1984OldsmobileFirenza——1.8LL4N/A—
1984OldsmobileOmega——2.8LV6N/A—
1984OldsmobileOmega——2.5LL4N/A—
1984PontiacFirebird——5.0LV8N/A—
1984PontiacFirebird——2.8LV6N/A—
1984PontiacFirebird——2.5LL4N/A—
1983BuickCentury————N/A—
1983BuickLeSabre————N/A—
1983BuickRegal————N/A—
1983BuickSkyhawk————N/A—
1983CadillacCimarron————N/A—
1983ChevroletCamaro————N/A—
1983Oldsmobile98————N/A—
1983OldsmobileCustom Cruiser————N/A—
1983OldsmobileCutlass Calais————N/A—
1983OldsmobileCutlass Ciera————N/A—
1983OldsmobileCutlass Supreme————N/A—
1983OldsmobileDelta 88————N/A—
1983OldsmobileFirenza——2.0LL4N/A—
1983OldsmobileFirenza——1.8LL4N/A—
1983OldsmobileOmega——2.5LL4N/A—
1983OldsmobileOmega——2.8LV6N/A—
1983PontiacFirebird——5.0LV8N/A—
1983PontiacFirebird——2.8LV6N/A—
1983PontiacFirebird——2.5LL4N/A—
1982BuickCentury————N/A—
1982BuickLeSabre————N/A—
1982BuickRegal————N/A—
1982BuickSkyhawk————N/A—
1982ChevroletCamaro————N/A—
1982Oldsmobile98————N/A—
1982OldsmobileCustom Cruiser————N/A—
1982OldsmobileCutlass Calais————N/A—
1982OldsmobileCutlass Ciera————N/A—
1982OldsmobileCutlass Supreme————N/A—
1982OldsmobileDelta 88————N/A—
1982OldsmobileFirenza——1.8LL4N/A—
1982OldsmobileOmega——2.5LL4N/A—
1982OldsmobileOmega——2.8LV6N/A—
1982PontiacFirebird——2.5LL4N/A—
1982PontiacFirebird——5.0LV8N/A—
1982PontiacFirebird——2.8LV6N/A—
1981ChevroletCamaro————N/A—
1981OldsmobileCutlass————N/A—
1980OldsmobileCutlass————N/A—
1979OldsmobileCutlass Salon————N/A—
1978OldsmobileCutlass Salon————N/A—
1978OldsmobileToronado——6.6LV8N/A—
1977OldsmobileToronado——6.6LV8N/A—
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 201181R145956-189410016638100598328956000836AR185AR258R3124