The battery, alternator, and starter may be the stars of the starting & charging system, but they would be useless without the relays, wiring and connectors that complete the system and conduct the current necessary for operation. And quite often it’s a bad starter relay, frayed or broken wire, or corroded connector that’s the cause of a dead battery or no-start, not a main component. But major or minor, we have the parts to get your vehicle functioning again.

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    • (0 reviews)
      # sp21183
      Starter Relay by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $12.31 - $28.14
    • (0 reviews)
      # sp10709
      GM Original Equipment™ Battery Saver Relay by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $13.67
    • (0 reviews)
      # sp21199
      Starter Relay by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s, brand...
      OE quality products from top original equipmentTop quality materials
      $16.19 - $86.21
    • (0 reviews)
      # mpn927894
      Multi Purpose Relay by Crown®. Fuel Pump Relay. Idle Speed Control Relay. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely...
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $9.02
    • (1 review)
      # mpn927862
      Multi Purpose Relay by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $9.18
    • (1 review)
      # mpn927862
      Multi Purpose Relay by Crown®. Clutch Compressor/Fuel Pump/Hi-Lo Washer. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely...
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $9.18
    • (0 reviews)
      # mpn927894
      Multi Purpose Relay by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $9.02
    • (0 reviews)
      # mpn927894
      Multi Purpose Relay by Crown®. Fog Lamps Relay. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $9.02
    • (1 review)
      # mpn927862
      Multi Purpose Relay by Crown®. Fog Lamps Relay. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $9.18
    • (0 reviews)
      # mpn357722871
      Starter Relay by Denso®. #2. Starter Relay will perfectly meet your expectations and enhance your life with Denso accessories.
      Great priceEasy installation
      $18.48
    • (0 reviews)
      # mpn357722894
      Starter Relay by Denso®. Starter Relay will perfectly meet your expectations and enhance your life with Denso accessories.
      Great priceEasy installation
      $88.11
    • (0 reviews)
      # mpn357722300
      Starter Relay by Denso®. Starter Relay will perfectly meet your expectations and enhance your life with Denso accessories.
      Great priceEasy installation
      $26.06
    • (0 reviews)
      # mpn357722871
      Starter Relay by Denso®. Starter Relay will perfectly meet your expectations and enhance your life with Denso accessories.
      Great priceEasy installation
      $18.48
    • (0 reviews)
      # mpn357722883
      Starter Relay by Denso®. Starter Relay will perfectly meet your expectations and enhance your life with Denso accessories.
      Great priceEasy installation
      $40.39
    • (0 reviews)
      # sp13027
      Starter Relay by Genuine®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $20.56 - $22.91
    • (0 reviews)
      # sp16865
      Dual Battery Solenoid Relay by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $40.87
    • (0 reviews)
      # sp16871
      Intermotor™ Starter Relay by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity...
      High quality at an affordable priceExpertly made from premium materials
      $39.13
    • (0 reviews)
      # sp27776
      Starter Relay by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for integrity to all channels...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $8.05 - $145.26
    • (0 reviews)
      # sp13031
      Tru-Tech™ Auxiliary Battery Relay by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $24.10 - $53.97
    • (0 reviews)
      # sp21182
      Starter Relay by Wehrle®. When you need a headlight bulb or a stop light switch, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and poor...
      OE quality fluids from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $10.13 - $25.22
    • (0 reviews)
      # sp21180
      Starter Relay by OER®. Replacement starter relay. This relay mounts on the inner fender well near the battery. Pre-packaged in box. Designed utilizing the latest technology, this product by OER features premium quality and will...
      Factory original quality for lessDirect fit replacement
      $12.37 - $32.00
    • (0 reviews)
      # mpn4371533384
      Starter Relay by Vemo®. OE Quality. Do you hear nothing but “click, click” when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair, but before you waste your time and gas...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $12.53
    • (0 reviews)
      # sp10761
      Professional™ Alternator Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $3.70 - $14.67
    • (0 reviews)
      # sp10685
      GM Original Equipment™ Alternator Cable by ACDelco®. When it comes to getting the power from your battery to your vehicle, there’s no better way than with high-quality ACDelco GM OE Battery Cables and accessories.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $27.92 - $44.15
    • (0 reviews)
      # sp20549
      Alternator Connector by Motocraft®. Motorcraft is the way to restore the performance of your vehicle. Designed specifically for your vehicle, Motorcraft products meet stringent Ford Motor Company standards and feature OEM quality...
      Direct OEM replacementDesigned and engineered to strict Ford Motor Company specifications
      $8.33 - $30.96
    • (0 reviews)
      # sp20550
      Starter Relay Connector by Motorcraft®. Motorcraft is the way to restore the performance of your vehicle. Designed specifically for your vehicle, Motorcraft products meet stringent Ford Motor Company standards and feature OEM...
      Direct OEM replacementMeets strict Ford Motor Company standards
      $12.95
    • (0 reviews)
      # sp16920
      Starter Cable by Motorcraft®. Motorcraft starter cable are designed for maximum performance and durability. Designed utilizing the latest technology, this product by Motorcraft features premium quality and will perform better than...
      Direct OEM replacementMeets strict Ford Motor Company standards
      $5.90 - $846.53
    • (0 reviews)
      # mpn3231527859
      Instrument Panel Wiring Junction Block Connector by Dorman®. With Leads. 7 Way Terminals Connector. Finish: Black. Dorman’s Connectors are wire harnesses used for a wide range of applications to connect various components on the...
      No special tools required for installationEasy to install
      $28.66
    • (0 reviews)
      # mpn1433312129
      Starter Pull Switch Knob by Genuine®. Location: On Switch. Do you hear nothing but “click, click” when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair, but before you...
      $10.39
    • (0 reviews)
      # sp95941
      Relay by Mopar®. Are your brakes making noise? Is your vehicle’s stopping power not what it used to be? Brake repairs are not something that can be put off, but before you waste your time and gas running out to the auto parts...
      Premium parts you can rely onDesigned to restore functionality
      $18.39 - $19.75
    • (0 reviews)
      # sp21177
      Starter Relay by Omix-Ada®. The starter is an electric motor that turns the crankshaft during the engine starting process. When the ignition key is turned, power goes to the starter solenoid, causing the starter drive to engage the...
      Performs according to OEM specificationsMeets or exceeds OEM quality standards
      $19.56
    • (0 reviews)
      # sp97944
      Battery Power Distribution Box by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $31.72 - $41.78
    • (0 reviews)
      # sp13033
      Battery Voltage Sensor Connector by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $9.93 - $49.18
    • (0 reviews)
      # mpn53657230
      Intermotor™ Auxiliary Battery Relay by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $118.48
    • (0 reviews)
      # sp16870
      Intermotor™ Battery Charge Relay by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $19.67 - $25.29
    • (0 reviews)
      # sp16876
      Starter Solenoid by Tru-Tech®. Do you hear nothing but “click, click” when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair, but before you waste your time and gas...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $9.32 - $160.30
    • (0 reviews)
      # mpn44333868
      Accessory Power Relay by Standard®. With 2 Mounting Stud. 75A. 2 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $32.84
    • (0 reviews)
      # mpn609077302
      Accessory Power Relay by Standard®. 3 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $9.89
    • (0 reviews)
      # mpn53643588
      Accessory Power Relay by Standard®. 40A. Rectangular Shape. 4 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...
      Every Standard relay is constructed using durable electro-magnets inside high temperature housings, designed to withstand harsh driving conditionsAll Standard electrical relays feature robust designs with high grade materials to meet the stringent demands of today's service professional
      $3.37
    • (0 reviews)
      # mpn609124292
      Accessory Power Relay by Standard®. Square Shape. 4 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices...
      Every Standard relay is constructed using durable electro-magnets encased with high temperature housing designed to withstand harsh engine conditionsEvery Standard RY-1772 relay features a mounting bracket for easy installation
      $120.66
    • (0 reviews)
      # mpn44333867
      Accessory Power Relay by Standard®. 6 Way. 6 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $48.56
    • (0 reviews)
      # mpn44333868
      Accessory Power Relay by Standard®. 75A. 2 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $32.84
    • (0 reviews)
      # mpn44333868
      Accessory Power Relay by Standard®. 75A. 2 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $32.84
    • (0 reviews)
      # mpn44434036
      Accessory Power Relay by Standard®. 4 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $15.48
    • (0 reviews)
      # mpn44333867
      Accessory Power Relay by Standard®. 6 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $48.56
    • (0 reviews)
      # mpn609122880
      Accessory Power Relay by Standard®. 4 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $73.24
    • (0 reviews)
      # mpn44364438
      Accessory Power Relay by Standard®. Rectangular Shape. 4 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...
      Premium parts you can rely onDesigned to restore functionality
      $6.20
    • (0 reviews)
      # mpn44333867
      Accessory Power Relay by Standard®. 6 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $48.56
    • (0 reviews)
      # mpn44364528
      Accessory Power Relay by Standard®. Blade Terminal Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $170.63
    • (0 reviews)
      # mpn44427282
      Emergency Lights Accessory Power Relay by Standard®. 4 Blade, Screw Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $34.26
    • (0 reviews)
      # mpn44427282
      Emergency Lights Accessory Power Relay by Standard®. 4 Blade, Screw Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...
      High quality composite housings protect against harsh temperatures and severe under hood conditionsFeaturing brass or copper contacts where specified for extended wear
      $34.26
    • (0 reviews)
      # sp102787
      Starter Relay Kit by Forecast®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...
      High quality at an affordable priceExpertly made from premium materials
      $26.91 - $32.60
    • (0 reviews)
      # mpn4371646243
      Starter Relay Kit by Santech®. Black. Do you hear nothing but "click, click" when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair, but before you waste your time and gas...
      High quality at an affordable priceExpertly made from premium materials
      $7.58
    • (0 reviews)
      # mpn4371645248
      Starter Relay Kit by Santech®. Gray. Do you hear nothing but "click, click" when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair, but before you waste your time and gas...
      High quality at an affordable priceExpertly made from premium materials
      $10.30
    • (0 reviews)
      # sp26421
      Starter Clutch Internal Switch by Motorcraft®. Motorcraft starter clutch internal switch are designed for maximum performance and durability.
      Direct OEM replacementMeets strict Ford Motor Company standards
      $10.97 - $65.78
    • (0 reviews)
      # sp26422
      Starter Solenoid Switch by Motorcraft®. Motorcraft starter solenoid switch are designed for maximum performance and durability.
      Direct OEM replacementMeets strict Ford Motor Company standards
      $16.12 - $24.09
    • (0 reviews)
      # mpn1857523729
      Accessory Power Relay by Standard®. 4 Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...
      Every relay is constructed using durable electro-magnets encased with high temperature housings designed to withstand harsh engine conditionsThis relay features quick connect, plug-in terminals for easy installation
      $14.26
    • (0 reviews)
      # mpn609124078
      Accessory Power Relay by Standard®. Rectangular Shape. 4 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...
      Every Standard relay is constructed using durable electro-magnets encased with high temperature housing designed to withstand harsh engine conditionsAll Standard electrical relays feature robust designs with high grade materials to meet the stringent demands of today's service professional
      $63.21
    • (0 reviews)
      # mpn1857486320
      Accessory Power Relay by Standard®. 20A. Flat Shape. 4 Blade Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...
      Every relay is constructed using durable electro-magnets encased with high temperature housings designed to withstand harsh engine conditionsThis relay features quick connect, plug-in terminals for easy installation
      $3.50
    • (0 reviews)
      # mpn1857523729
      Accessory Power Relay by Standard®. 4 Terminals Male Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...
      Every relay is constructed using durable electro-magnets encased with high temperature housings designed to withstand harsh engine conditionsThis relay features quick connect, plug-in terminals for easy installation
      $14.26




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    The starter relay allows low current and lighter gauge wire to control the high current needed to operate the starter motor, avoiding the danger and complexity of routing high current carrying, heavy gauge wire to the ignition switch. The battery cables and all the wiring and connectors in the starting & charging system must be of the proper gauge, and the integrity of the wire and condition of the terminals must be sufficient to conduct the required current.

    The starter relay is part of the starter control circuit. It can be controlled by the ignition switch or through the Powertrain Control Module (PCM). In an ignition switch controlled relay, when the switch is turned to the START position, current is applied to the relay coil, creating a magnetic field that closes the power circuit contacts and sends voltage to the starter solenoid. Controlling the relay with the PCM allows anti-theft overrides to be employed if the wrong ignition key is used. If the starter relay is suspected as the cause for a no-start, voltage tests can be used to determine relay condition.

    Due to the large current demands of the starter motor, the battery cables are the heaviest gauge wires in a vehicle’s electrical system, typically ranging from 6 to 4/0 gauge. They are constructed from stranded copper wire encased in an insulated covering. The positive battery cable is connected to the positive battery terminal and starter solenoid. The negative cable is connected to the negative terminal and the chassis or engine block. A cable that is cut or frayed will have high resistance and may not be able to conduct the current needed to start the engine. The location of high resistance can be found with a voltage drop test.

    Corrosion and damaged terminals are another cause of excessive circuit resistance. While battery cable terminals can often be cleaned, it is usually difficult or impossible to clean and repair the small, delicate contacts in alternator, voltage regulator, and other electrical connectors in the starting & charging system. We offer original equipment style replacement connectors complete with wires, commonly known as “pigtails”, which can easily be spliced into the harness. Our battery cables and starter relays are also configured for direct fit, and we carry other system needs like battery sensors and terminal protectors.

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