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Part #: RY-603

Standard Ignition RY-603 Power Antenna Relay

318 vehicles fit this part
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Fitment: Cadillac, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, and Volkswagen, Eldorado, Century, Regal, Roadmaster, Corvette, Express 1500, Express 2500, Express 3500, G30, Impala, G3500, Savana 1500, Savana 2500, Savana 3500, G10, G20, G1500, G2500, Cutlass Ciera, Caprice, Lumina, Cutlass Supreme, Grand Prix, Camaro, Commercial Chassis, Custom Cruiser, Bonneville, Firebird, Cavalier, Cutlass Calais, Delta 88, 6000, Grand Am, Tempest, Skyhawk, Astro, Safari, LeMans, Skylark, Cimarron, Fleetwood, Firenza, Electra, Somerset, DeVille, 98, Calais, Cutlass, Cutlass Salon, Golf, Parisienne, Toronado, LeSabre, Omega, Estate Wagon, Dasher, Rabbit, and Scirocco
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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.

BrandStandard Ignition
Part NumberRY-603
Amperage Rating20 A
Connector GenderFemale
Connector ShapeSquare
Continuous DutyNo
FunctionsRelay
Mounting Bracket(s) IncludedNo
Terminal GenderMale
Terminal TypeBlade
Voltage12

This part fits 318 vehicles. Search below:

YearMakeModelSubmodelBody TypeLitersCylindersPositionNotes
2002CadillacEldorado4.6LV8N/A
2001CadillacEldorado4.6LV8N/AOE No. 10059832
1996BuickCenturyN/A
1996BuickRegalN/A
1996BuickRoadmasterN/AFitment Note: Without Bracket
1996ChevroletCorvetteN/A
1996ChevroletCorvette5.7LV8N/A
1996ChevroletExpress 1500N/A
1996ChevroletExpress 2500N/A
1996ChevroletExpress 3500N/A
1996ChevroletG30N/A
1996ChevroletImpalaN/A
1996GMCG3500N/A
1996GMCSavana 1500N/A
1996GMCSavana 2500N/A
1996GMCSavana 3500N/A
1995BuickCenturyN/A
1995BuickRegalN/A
1995BuickRoadmasterN/AFitment Note: Without Bracket
1995ChevroletCorvette5.7LV8N/A
1995ChevroletCorvetteN/A
1995ChevroletG10N/A
1995ChevroletG20N/A
1995ChevroletG30N/A
1995ChevroletImpalaN/A
1995GMCG1500N/A
1995GMCG2500N/A
1995GMCG3500N/A
1995OldsmobileCutlass CieraN/A
1994BuickCenturyN/A
1994BuickRegalN/A
1994BuickRoadmasterN/AFitment Note: Without Bracket
1994ChevroletCapriceN/A
1994ChevroletCorvetteN/A
1994ChevroletCorvette5.7LV8N/A
1994ChevroletG10N/A
1994ChevroletG20N/A
1994ChevroletG30N/A
1994ChevroletImpalaN/A
1994ChevroletLuminaN/A
1994GMCG1500N/A
1994GMCG2500N/A
1994GMCG3500N/A
1994OldsmobileCutlass CieraN/A
1994OldsmobileCutlass SupremeN/A
1994PontiacGrand Prix3.4LV6N/A
1994PontiacGrand Prix3.1LV6N/A
1993BuickCenturyN/A
1993BuickRegalN/A
1993BuickRoadmasterN/AFitment Note: Without Bracket
1993ChevroletCapriceN/A
1993ChevroletCorvette5.7LV8N/A
1993ChevroletCorvetteN/A
1993ChevroletLuminaN/A
1993OldsmobileCutlass CieraN/A
1993OldsmobileCutlass SupremeN/A
1993PontiacGrand Prix3.4LV6N/A
1993PontiacGrand Prix3.1LV6N/A
1992BuickCenturyN/A
1992BuickRegalN/A
1992BuickRoadmasterN/AFitment Note: Without Bracket
1992ChevroletCamaroN/A
1992ChevroletCapriceN/A
1992ChevroletCommercial Chassis4.3LV6N/A
1992ChevroletCommercial Chassis5.0LV8N/A
1992ChevroletCommercial Chassis5.7LV8N/A
1992ChevroletCorvetteN/A
1992ChevroletLuminaN/A
1992OldsmobileCustom CruiserN/A
1992OldsmobileCutlass CieraN/A
1992OldsmobileCutlass SupremeN/A
1992PontiacBonnevilleN/A6 Blade Term.
1992PontiacFirebirdN/A
1992PontiacGrand PrixN/A
1991BuickCenturyN/A
1991BuickRegalN/A
1991BuickRoadmasterN/A
1991ChevroletCamaroN/A
1991ChevroletCapriceN/A
1991ChevroletCavalierN/A
1991ChevroletCommercial Chassis5.7LV8N/A
1991ChevroletCommercial Chassis5.0LV8N/A
1991ChevroletCorvetteN/A
1991ChevroletLuminaN/A
1991OldsmobileCustom CruiserN/A
1991OldsmobileCutlass CalaisN/A
1991OldsmobileCutlass CieraN/A
1991OldsmobileCutlass SupremeN/A
1991OldsmobileDelta 88SedanN/A
1991Pontiac6000N/A
1991PontiacBonnevilleN/A6 Blade Term.
1991PontiacFirebirdN/A
1991PontiacGrand AmN/A
1991PontiacGrand PrixN/A
1991PontiacTempestN/A
1990BuickCenturyN/A
1990BuickRegalN/A
1990ChevroletCamaroN/A
1990ChevroletCapriceN/A
1990ChevroletCavalierN/A
1990ChevroletCorvetteN/A
1990ChevroletLuminaN/A
1990OldsmobileCustom CruiserN/A
1990OldsmobileCutlass CalaisN/A
1990OldsmobileCutlass CieraN/A
1990OldsmobileCutlass SupremeN/A
1990OldsmobileDelta 88SedanN/A
1990Pontiac6000N/A
1990PontiacBonnevilleN/A6 Blade Term.
1990PontiacFirebirdN/A
1990PontiacGrand AmN/A
1990PontiacGrand PrixN/A
1990PontiacTempestN/A
1989BuickCenturyN/A
1989BuickRegalN/A
1989BuickSkyhawkN/A
1989ChevroletAstroN/A
1989ChevroletCamaroN/A
1989ChevroletCapriceN/A
1989ChevroletCavalierN/A
1989ChevroletCorvetteN/A
1989GMCSafariN/A
1989OldsmobileCustom CruiserN/A
1989OldsmobileCutlass CalaisN/A
1989OldsmobileCutlass CieraN/A
1989OldsmobileCutlass SupremeN/A
1989OldsmobileDelta 88SedanN/A
1989Pontiac6000N/A
1989PontiacBonnevilleN/A6 Blade Term.
1989PontiacFirebirdN/A
1989PontiacGrand AmN/A
1989PontiacGrand PrixN/A
1989PontiacLeMansN/A
1989PontiacSafariN/A
1989PontiacTempestN/A
1988BuickCenturyN/A
1988BuickRegalN/A
1988BuickSkyhawkN/A
1988BuickSkylarkN/A
1988CadillacCimarronN/A
1988CadillacFleetwoodN/Aw/ Skirt
1988ChevroletAstroN/A
1988ChevroletCamaroN/A
1988ChevroletCapriceN/A
1988ChevroletCavalierN/A
1988ChevroletCorvetteN/A
1988GMCSafariN/A
1988OldsmobileCustom CruiserN/A
1988OldsmobileCutlass CalaisN/A
1988OldsmobileCutlass CieraN/A
1988OldsmobileCutlass SupremeN/A
1988OldsmobileDelta 88N/A
1988OldsmobileFirenzaN/A
1988Pontiac6000N/A
1988PontiacBonnevilleN/A6 Blade Term.
1988PontiacFirebirdN/A
1988PontiacGrand AmN/A
1988PontiacGrand PrixN/A
1988PontiacLeMansN/A
1988PontiacSafariN/A
1988PontiacTempestN/A
1987BuickCenturyN/A
1987BuickRegalN/A
1987BuickSkyhawkN/A
1987BuickSkylarkN/A
1987CadillacCimarronN/A
1987CadillacCommercial ChassisN/A
1987CadillacDeVilleN/A
1987CadillacFleetwoodN/Aw/ Skirt
1987ChevroletAstroN/A
1987ChevroletCamaroN/A
1987ChevroletCapriceN/A
1987ChevroletCavalierN/A
1987ChevroletCorvetteN/A
1987GMCSafariN/A
1987Oldsmobile98N/A
1987OldsmobileCalaisN/A
1987OldsmobileCustom CruiserN/A
1987OldsmobileCutlassN/A
1987OldsmobileCutlass CieraN/A
1987OldsmobileCutlass SalonN/A
1987OldsmobileCutlass SupremeN/A
1987OldsmobileDelta 88N/A
1987OldsmobileFirenzaN/A
1987Pontiac6000N/A6 Blade Term.
1987PontiacBonnevilleN/A6 Blade Term.
1987PontiacBonnevilleN/A
1987PontiacFirebirdN/A
1987PontiacGrand AmN/A
1987PontiacGrand PrixN/A
1987PontiacSafariN/A
1987PontiacTempestN/A
1987VolkswagenGolfN/A
1986BuickCenturyN/A
1986BuickRegalN/A
1986BuickSkyhawkN/A
1986BuickSkylarkN/A
1986CadillacCimarronN/A
1986CadillacCommercial ChassisN/A
1986CadillacDeVilleN/A
1986CadillacFleetwoodN/Aw/ Skirt
1986ChevroletCamaroN/A
1986ChevroletCapriceN/A
1986ChevroletCavalierN/A
1986ChevroletCorvetteN/A
1986Oldsmobile98RegencyN/A
1986Oldsmobile98Regency BroughamN/A
1986OldsmobileCalaisN/A
1986OldsmobileCustom CruiserN/A
1986OldsmobileCutlassN/A
1986OldsmobileCutlass CieraN/A
1986OldsmobileCutlass SalonN/A
1986OldsmobileCutlass SupremeN/A
1986OldsmobileDelta 88N/A
1986OldsmobileFirenzaN/A
1986Pontiac6000N/A6 Blade Term.
1986PontiacBonnevilleN/A
1986PontiacFirebirdN/A
1986PontiacGrand PrixN/A
1986PontiacParisienneN/A
1986VolkswagenGolfN/A
1985BuickCenturyN/A
1985BuickRegalN/A
1985BuickSkyhawkN/A
1985CadillacCimarronN/A
1985CadillacCommercial ChassisN/A
1985CadillacFleetwoodN/A
1985ChevroletCamaroN/A
1985ChevroletCapriceN/A
1985ChevroletCorvetteN/A
1985ChevroletImpala5.7LV8N/A
1985ChevroletImpala5.0LV8N/A
1985ChevroletImpala3.8LV6N/A
1985ChevroletImpala4.3LV6N/A
1985Oldsmobile983.8LV6N/A
1985Oldsmobile984.3LV6N/A
1985Oldsmobile983.0LV6N/A
1985OldsmobileCalais3.0LV6N/A
1985OldsmobileCalais2.5LL4N/A
1985OldsmobileCustom CruiserN/A
1985OldsmobileCutlassN/A
1985OldsmobileCutlass CieraN/A
1985OldsmobileCutlass SalonN/A
1985OldsmobileCutlass SupremeN/A
1985OldsmobileDelta 88N/A
1985OldsmobileFirenza2.8LV6N/A
1985OldsmobileFirenza1.8LL4N/A
1985OldsmobileFirenza2.0LL4N/A
1985OldsmobileToronado5.7LV8N/A
1985OldsmobileToronado5.0LV8N/A
1985PontiacFirebirdN/A
1985PontiacParisienneN/A
1985VolkswagenGolfN/A
1984BuickCenturyN/A
1984BuickLeSabreN/A
1984BuickRegalN/A
1984BuickSkyhawkN/A
1984CadillacCimarronN/A
1984ChevroletCamaroN/A
1984ChevroletCaprice5.0LV8N/A
1984ChevroletCorvetteN/A
1984Oldsmobile985.7LV8N/A
1984Oldsmobile985.0LV8N/A
1984OldsmobileCustom CruiserN/A
1984OldsmobileCutlass CalaisN/A
1984OldsmobileCutlass CieraN/A
1984OldsmobileCutlass SupremeN/A
1984OldsmobileDelta 88N/A
1984OldsmobileFirenza2.0LL4N/A
1984OldsmobileFirenza1.8LL4N/A
1984OldsmobileOmega2.8LV6N/A
1984OldsmobileOmega2.5LL4N/A
1984PontiacFirebird5.0LV8N/A
1984PontiacFirebird2.8LV6N/A
1984PontiacFirebird2.5LL4N/A
1983BuickCenturyN/A
1983BuickLeSabreN/A
1983BuickRegalN/A
1983BuickSkyhawkN/A
1983CadillacCimarronN/A
1983ChevroletCamaroN/A
1983Oldsmobile98N/A
1983OldsmobileCustom CruiserN/A
1983OldsmobileCutlass CalaisN/A
1983OldsmobileCutlass CieraN/A
1983OldsmobileCutlass SupremeN/A
1983OldsmobileDelta 88N/A
1983OldsmobileFirenza2.0LL4N/A
1983OldsmobileFirenza1.8LL4N/A
1983OldsmobileOmega2.5LL4N/A
1983OldsmobileOmega2.8LV6N/A
1983PontiacFirebird5.0LV8N/A
1983PontiacFirebird2.8LV6N/A
1983PontiacFirebird2.5LL4N/A
1982BuickCenturyN/A
1982BuickLeSabreN/A
1982BuickRegalN/A
1982BuickSkyhawkN/A
1982ChevroletCamaroN/A
1982Oldsmobile98N/A
1982OldsmobileCustom CruiserN/A
1982OldsmobileCutlass CalaisN/A
1982OldsmobileCutlass CieraN/A
1982OldsmobileCutlass SupremeN/A
1982OldsmobileDelta 88N/A
1982OldsmobileFirenza1.8LL4N/A
1982OldsmobileOmega2.5LL4N/A
1982OldsmobileOmega2.8LV6N/A
1982PontiacFirebird2.5LL4N/A
1982PontiacFirebird5.0LV8N/A
1982PontiacFirebird2.8LV6N/A
1981ChevroletCamaroN/A
1981OldsmobileCutlassN/A
1980OldsmobileCutlassN/A
1979OldsmobileCutlass SalonN/A
1978OldsmobileCutlass SalonN/A
1978OldsmobileToronado6.6LV8N/A
1977OldsmobileToronado6.6LV8N/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:

10016638100598321R14592011856-18948956000836AR185AR258R3124

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