Automotive lighting is what helps car aficionados stay safe and sound behind the wheel during poor visibility conditions and at night. The simplest light circuit consists of a switch, a bulb, and a power source. The lighting circuits in modern vehicles are far more complex, however, and usually include relays, sensors, and control modules. Control modules govern circuits where more than simple on/off is required; relays allow a low-current circuit to control a high-current circuit; and sensors affect function, enabling automatic operation or adjustment.

Show items:
Sort by:
    • (1 review)
      # sp6227
      Headlight Motor by Cardone®. All modules are 100% tested with automated computerized test equipment to ensure functionality and reliable. 100% resolder of critical components ensures superior electrical connections, no intermittent...
      Premium parts you can rely onDesigned to restore functionality
      $37.28 - $152.69
    • (0 reviews)
      # sp6229
      Lighting Control Module by Cardone®. All modules are 100% tested with automated computerized test equipment to ensure functionality and reliable. 100% resolder of critical components ensures superior electrical connections, no...
      Premium parts you can rely onDesigned to restore functionality
      $90.51 - $168.16
    • (0 reviews)
      # sp6669
      Daytime Running Light Module by Dorman®. Engineered for safety and affordability, Dorman’s Daytime Running Light Module restores the headlamps to proper operation without the expense of purchasing the entire Daytime Running Light...
      An immediate, “must-fix” item - replacement is necessary for passing state inspection and helps you avoid tickets and finesDirect replacement for a proper fit
      $24.95 - $91.95
    • (0 reviews)
      # sp4146
      Xenon Headlight Control Module by Dorman®. Restore your HID headlights to original operation - and regain excellent nighttime visibility - with Dorman’s HID Control Module. Replacement is imperative for getting your vehicle safely...
      An immediate, "must-fix" item - replacement is necessary for passing state inspection and helps you avoid tickets and finesDirect replacement for a proper fit
      $105.95 - $282.95
    • (0 reviews)
      # sp6658
      Headlight Level Sensor by Dorman®. Re-engineered to address failure points in the original materials and design, Dorman’s Headlight Level Sensors are designed with thicker materials to eliminate water intrusion. Also as an added...
      Direct replacement for a proper fitAlso used as a Suspension Leveling Sensor for select applications
      $37.95 - $211.80
    • (0 reviews)
      # sp113943
      Accessory Power 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...
      Premium parts you can rely onDesigned to restore functionality
      $46.10 - $56.68
    • (0 reviews)
      # sp11647
      GM Original Equipment™ Body Control Module 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
      $27.96 - $792.26
    • (0 reviews)
      # sp11212
      GM Original Equipment™ Headlight Motor 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
      $158.42 - $317.91
    • (0 reviews)
      # sp10738
      GM Original Equipment™ Turn Signal Flasher 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
      $8.94 - $64.95
    • (0 reviews)
      # sp11657
      Professional™ Body Control Module 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
      $97.47 - $233.21
    • (0 reviews)
      # sp10786
      Professional™ Turn Signal Flasher 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
      $11.62 - $17.27
    • (1 review)
      # sp90252
      Body Control Module by Cardone®. All modules are 100% tested with automated computerized test equipment to ensure functionality and reliable. 100% resolder of critical components ensures superior electrical connections, no intermittent...
      Premium parts you can rely onDesigned to restore functionality
      $52.59 - $377.30
    • (5 reviews)
      # sp113012
      Xenon Headlight Control Module by HELLA®. If you're looking for reliable lighting solutions, Hella has you covered. Designed using advanced technologies, Hella products ensure the ultimate in quality and illumination. They are...
      For the ultimate in illuminationMade using quality materials and advanced technologies
      $117.88 - $372.44
    • (0 reviews)
      # mpn41188851
      Power Lock Relay by Omix-ADA®. Works fog Lights, Headlights, Rear Wiper. Direct Fit. 5 Year Limited Warranty. Some Jeep parts suppliers may have major audio and electronics parts like radios, speakers, wiper motors and horns, but when...
      Direct replacementInstalls the same as factory unit
      $7.59
    • (1 review)
      # sp121394
      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
      $8.87 - $9.04
    • (0 reviews)
      # sp113180
      High Intensity Discharge Headlight Igniter by Magneti Marelli®. 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...
      Premium parts you can rely onDesigned to restore functionality
      $130.63 - $448.86
    • (0 reviews)
      # sp100282
      Factory OEM Ballast Input by Race Sport®. Voltage: 12V. Wattage: 35W. 9-16V Max Input Current 6.5A-88A. Whether you are looking to replace a failing OEM ballast or just looking to upgrade to a more reliable setup, Race Sport Lighting...
      1 Year WarrantyRugged construction to withstand harsh conditions
      $132.83
    • (0 reviews)
      # sp116774
      Factory OEM Ballast Input-H by Race Sport®. Whether you are looking to replace a failing OEM ballast or just looking to upgrade to a more reliable setup, Race Sport Lighting has you covered with vehicle specific OEM direct replacement...
      1 Year WarrantyRugged construction to withstand harsh conditions
      $132.83
    • (0 reviews)
      # sp100284
      OEM Factory Replacement Ballast by Race Sport®. These individual OEM HID Replacement ballasts ensure that your vehicle's lighting is always working. This product is made of high-quality materials to serve you for years to come....
      Single 35W OEM D4 Style HID Replacement BallastIncludes mounting hardware
      $144.31 - $173.18
    • (0 reviews)
      # sp100285
      Professional OEM Replacement Ballast by Race Sport®. Race Sport Lighting professional universal style OEM replacement ballast. These ballast make excellent replacements when OEM specific ballasts are not readily available or when...
      35W / 1100VDC / 85VAC / 2000HRSD1 HID bulb connector
      $120.85 - $177.46
    • (0 reviews)
      # sp95263
      Object Sensor Module by Dorman®. Dorman has all the components needed for a complete repair. Quickly and easily installed, it eliminates the clunking noise that may result when this part fails, while restoring original ride control.
      Easy to installDirect replacement for a proper fit
      $559.95
    • (0 reviews)
      # sp8163
      Remanufactured Body Control Module byDorman®. The Body Control Module monitors and controls various electronic accessories in a vehicle. Our remanufactured Body Control Modules are designed to fix and correct failure prone components on...
      100% replacement of relays, resistors, capacitors and soldering jointsRemanufactured from high-quality materials for durability and quality assurance
      $66.95 - $171.95
    • (7 reviews)
      # sp6729
      Totally Integrated Power Module by Dorman®. Finally, an environmentally friendly alternative to buying new: that also saves you money. Dorman’s Integrated Power Module restores your vehicle’s electrical system to original operation,...
      Plug and play repair solution; no programming necessaryHigh-quality replacement and renewed parts ensure long-lasting service
      $248.47 - $557.55
    • (0 reviews)
      # sp18591
      Combination Switch 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 integrity to...
      Premium parts you can rely onDesigned to restore functionality
      $11.56 - $46.88
    • (0 reviews)
      # sp121402
      TechSmart High Intensity Discharge Lighting Ballast 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...
      Premium parts you can rely onDesigned to restore functionality
      $168.64 - $272.48
    • (0 reviews)
      # sp27896
      TechSmart™ Daytime Running Light Module 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...
      High quality at an affordable priceExpertly made from premium materials
      $52.58 - $149.06
    • (0 reviews)
      # sp27833
      TechSmart™ Headlight Adjusting Motor 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...
      High quality at an affordable priceExpertly made from premium materials
      $30.93 - $68.80
    • (0 reviews)
      # sp27899
      TechSmart™ Lighting Control Module 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...
      High quality at an affordable priceExpertly made from premium materials
      $201.01 - $293.43
    • (0 reviews)
      # sp97955
      TechSmart™ Xenon Headlight Igniter 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...
      Premium parts you can rely onDesigned to restore functionality
      $114.67
    • (0 reviews)
      # sp27902
      TechSmart™ Xenon Lighting Ballast 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...
      High quality at an affordable priceExpertly made from premium materials
      $51.88 - $956.12




    Browse by Part Name

    Featured Brands

    Relays are the most common additional component found in light circuits and controlled by the low power signal, sending a signal to the circuit breaker as soon as the fault in the lighting system occurs. They are used for protection against any voltage surges and to simplify component design and installation. Many lighting circuits draw high current and heavier gauge wire must be used. By controlling the load with a relay, much lighter gauge wire and a smaller, lighter-duty switch can be used in the circuit between the switch and the relay, making switch construction and mounting location in the vehicle easier. Many lighting circuits are controlled through a body control computer. Using a relay in the circuit protects the computer from expensive damage that could be caused by high current.

    One of the most common lighting control module is found in the Daytime Running Lights (DRL) system. DRLs automatically activate the headlights, usually at reduced intensity, when the engine is running. The increased vehicle visibility makes driving safer during daylight hours, and the driver can override the system at any time by turning on the headlights. Some systems use a resistor to reduce voltage to the headlights for reduced light intensity, but many systems use pulse width modulation and a control module that has a duty-cycle to reduce output. In a duty cycle output, power is rapidly switched on and off as it is supplied to the lights. The “off” time reduces power supplied by a desired percentage and so reduces the headlight intensity.

    Sensors are used in some lighting system to affect their operation. Photocell sensors detect ambient lighting and are used in automatic on/off headlight systems and with automatic headlight dimming. In the former system the photocell sensor signals a control module when the level of ambient lighting decreases to a certain level, and the module energizes a relay that in turn sends power to the headlights. In the latter system the headlights are switched from high to low beam when the photocell sensor detects light from oncoming vehicles. Vehicles with self-leveling headlights have a level sensor that detects changes in vehicle tilt caused by additional passengers or cargo, signaling a leveling motor that adjusts the angle of the headlights accordingly.

    Whether you’re looking for a premium-grade light relay to ensure effective protection for the circuit from overcurrents, control module to safeguard the system from over/under charging and allow you to turned on/off the lights automatically at programmable time intervals, or sensors to detect how how bright/dark the light is, we’ve got you covered. Our virtual shelves are stacked to the ceiling with a diverse variety of top-notch light relays, sensors, and control modules from leading manufacturers in premier restoration part industry. Designed with high precision using the finest materials, these components look, fit, and perform as perfectly as your original parts. They’re bound to help restore your lighting system’s protection and efficiency so you can enjoy superior level of illumination needed to safely operate your vehicle, while having confidence that it stays safe from heavy currents.

    Related Categories

    Browse by Vehicle

    Light Relays, Sensors & Control Modules Reviews

    Average rating:  4.5  4.5 - 50 reviews
      /  Read All Light Relays + Sensors Reviews
    2 of 5
    A1 Cardone BCM GM Truck
    I will never buy another a1 Cardone product. I received the item. Well packaged. No issue with delivery other than a day delay but no big deal. Got the bcm attempted to install. Would not even function. The bcm was polluted in dust. Poor manufacturing is the issue. They even went so cheap as to paint the casing of the bcm with spray paint and had runs all around it. Not really important because you don’t see it just not something I would send to a customer. On top of it all I got charged for the return shipping. Very disappointed. I’ll stick to my local part stores. I ended up having to pay 230$ for one from a dealer. Thought I could save some money, wasn’t worth the hassle. CARiD isn’t a bad company though. Customer service was alright.
    CPosted by Carl (Youngstown, OH) / October 4, 2017
    2000 GMC Yukon
    Was this review helpful for you? Yes
    View More

    SECURE SHOPPING

    All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only.
    It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.