Light Relays, Sensors, Control Modules
- ACDelco®GM Original Equipment™ Fog Light Relay ConnectorGM Original Equipment™ Fog Light Relay Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.86
- ACDelco®GM Original Equipment™ Forward Light Harness ConnectorGM Original Equipment™ Forward Light Harness Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.92 - $143.07
- ACDelco®GM Original Equipment™ Headlight Ballast ConnectorGM Original Equipment™ Headlight Ballast Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$37.37 - $47.05
- ACDelco®GM Original Equipment™ Headlight Control ModuleGM Original Equipment™ Headlight Control Module by ACDelco®. Original Equipment machined to meet or exceed original specifications. Designed utilizing the latest technology, this product by ACDelco features premium quality and will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$36.99 - $51.79
- ACDelco®GM Original Equipment™ Headlight Dimmer Switch ConnectorGM Original Equipment™ Headlight Dimmer Switch Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$75.06 - $78.93
- ACDelco®GM Original Equipment™ Headlight Level Sensor ConnectorGM Original Equipment™ Headlight Level Sensor Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.72 - $42.94
- ACDelco®GM Original Equipment™ Headlight RelayGM Original Equipment™ Headlight Relay by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.68 - $27.88
- ACDelco®GM Original Equipment™ Headlight Switch ConnectorGM Original Equipment™ Headlight Switch Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$34.54 - $99.68
- ACDelco®GM Original Equipment™ Headlight Switch Light SocketGM Original Equipment™ Headlight Switch Light Socket by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$24.25 - $31.89
- ACDelco®GM Original Equipment™ Headliner Harness ConnectorGM Original Equipment™ Headliner Harness Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$19.00 - $281.76
- ACDelco®GM Original Equipment™ Multi Purpose Connector KitGM Original Equipment™ Multi Purpose Connector Kit by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$10.89 - $105.36
- ACDelco®GM Original Equipment™ Multi Purpose RelayGM Original Equipment™ Multi Purpose Relay by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.64 - $27.45
- ACDelco®GM Original Equipment™ Parking Aid Control Module ConnectorGM Original Equipment™ Parking Aid Control Module Connector by ACDelco®. ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your...Protective outer coverings help provide long-lasting durabilityColor-coded wires allow for easy installation$52.15 - $56.64
- ACDelco®GM Original Equipment™ Parking Aid Sensor Control Module ConnectorGM Original Equipment™ Parking Aid Sensor Control Module Connector by ACDelco®. ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your...Protective outer coverings help provide long-lasting durabilityColor-coded wires allow for easy installation$52.15
- ACDelco®GM Original Equipment™ Parking Light ConnectorGM Original Equipment™ Parking Light Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$20.08 - $61.87
- ACDelco®GM Original Equipment™ Parking and Turn Signal Light ConnectorGM Original Equipment™ Parking and Turn Signal Light Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$24.33 - $50.84
- ACDelco®GM Original Equipment™ Reading Light ConnectorGM Original Equipment™ Reading Light Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.80 - $31.70
- ACDelco®GM Original Equipment™ Side Marker Lamp SocketGM Original Equipment™ Side Marker Lamp Socket by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.22 - $55.85
- ACDelco®GM Original Equipment™ Side Marker Light ConnectorGM Original Equipment™ Side Marker Light Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.59 - $60.18
- ACDelco®GM Original Equipment™ Tail Light ConnectorGM Original Equipment™ Tail Light Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$22.28 - $92.86
- ACDelco®GM Original Equipment™ Tail Light Wiring Junction Block ConnectorGM Original Equipment™ Tail Light Wiring Junction Block Connector by ACDelco®. ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your...Protective outer coverings help provide long-lasting durabilityColor-coded wires allow for easy installation$36.19 - $57.77
- ACDelco®GM Original Equipment™ Turn Signal Light ConnectorGM Original Equipment™ Turn Signal Light Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$28.75 - $39.38
- ACDelco®GM Original Equipment™ Turn Signal Switch ConnectorGM Original Equipment™ Turn Signal Switch Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$37.35 - $99.68
- ACDelco®GM Original Equipment™ Under Hood Light ConnectorGM Original Equipment™ Under Hood Light Connector by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$31.70
- ACDelco®Genuine GM Parts Hazard Warning FlasherGenuine GM Parts Hazard Warning Flasher by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.63 - $103.67
- ACDelco®Genuine GM Parts™ Body Control ModuleGenuine GM Parts™ Body Control Module by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$370.87 - $491.30
- ACDelco®Genuine GM Parts™ Body Control Module BracketGenuine GM Parts™ Body Control Module Bracket by ACDelco®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from their immense selection of premium replacement electrical parts...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.76 - $27.99
- ACDelco®Genuine GM Parts™ Brake Light ConnectorGenuine GM Parts™ Brake Light 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$8.13 - $71.42
- ACDelco®Genuine GM Parts™ Center High Mount Stop Light SocketGenuine GM Parts™ Center High Mount Stop Light Socket 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$22.13 - $24.33
- ACDelco®Genuine GM Parts™ Daytime Running Light ModuleGenuine GM Parts™ Daytime Running Light 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$59.27 - $163.37
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.
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 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.
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