Standard Ignition HLS1786 Headlight Switch
OE Quality 60-Day Returns
Standard Ignition

Standard Ignition HLS1786 Headlight Switch

Brand Standard Ignition HLS1786
Terminal Quantity 12
Connector Gender Female
Terminal Gender Male
Attachment Method Snap fit
Color/Finish Black, white
Connector Quantity 1
Connector Type Plug in
Finish Plastic
Functions Switch
Terminal Type Pin
Fits Chevrolet and GMC · 23 vehicles

Plug-in design. Snap-fit connector helps make installation straightforward.

Switch function. Provides reliable control for lighting circuits.

Plastic finish. Black and white housing with a clean, durable look.

Cross-references 84526543, HL7811 and HLSB10400 for the same application. See all 4.

$53.39Free shipping
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Headlight Switch for Silverado and Sierra

Standard Ignition HLS1786 is a headlight switch built for direct replacement in select Chevrolet Silverado and GMC Sierra trucks with security lighting. It uses a plug-in connector layout and snap-fit attachment method for a clean OE-style electrical connection.

  • Headlight switch for select Chevrolet Silverado and GMC Sierra applications
  • 12 terminals with male pin terminals and one female connector
  • Plug-in connector type with snap-fit attachment method
  • Black and white plastic finish
  • Cross-reference part numbers include HL7811 and S10653 for the same application

Detailed Product Overview

Standard Ignition HLS1786 is a replacement headlight switch designed around the electrical and connector requirements of late-model GM trucks. The 12-terminal, pin-style design supports a secure interface, while the female connector and snap-fit mounting help maintain the original switch layout. This part number is a direct-fit option for 2020-2024 Chevrolet Silverado 2500 HD, 2020-2024 GMC Sierra 2500 HD, 2020-2024 GMC Sierra 3500 HD, 2020-2023 Chevrolet Silverado 1500, and 2020-2023 Chevrolet Silverado 3500 HD, all with security lighting. Standard Ignition HLS1786 is a practical choice when replacing a worn or malfunctioning headlight switch in Silverado and Sierra trucks.

Common Issues This Part Can Address

  • Headlights that do not switch on or off correctly
  • Intermittent lighting control operation
  • Faulty dash switch response during normal use
  • Electrical connection problems at the switch interface
  • Loss of proper control for security lighting-equipped trucks

Installation Notes and Tips

Verify the vehicle is equipped with security lighting before ordering. Match the connector style, terminal count, and switch layout to the original unit before installation. Because this is a plug-in electrical component, inspect the harness connector for corrosion, bent pins, or heat damage before connecting the replacement switch.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical replacement parts. HLS1786 is built to match the specified connector and terminal configuration for the listed Chevrolet Silverado and GMC Sierra applications.

Related reading

This part fits 23 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2024ChevroletSilverado 2500 HD6.6LV8w/ Security Lighting
2024GMCSierra 2500 HD6.6LV8w/ Security Lighting
2024GMCSierra 3500 HD6.6LV8w/ Security Lighting
2023ChevroletSilverado 1500——w/ Security Lighting
2023ChevroletSilverado 2500 HD6.6LV8w/ Security Lighting
2023ChevroletSilverado 3500 HD6.6LV8w/ Security Lighting
2023GMCSierra 2500 HD6.6LV8w/ Security Lighting
2023GMCSierra 3500 HD6.6LV8w/ Security Lighting
2022ChevroletSilverado 1500——w/ Security Lighting
2022ChevroletSilverado 2500 HD6.6LV8w/ Security Lighting
2022ChevroletSilverado 3500 HD6.6LV8w/ Security Lighting
2022GMCSierra 2500 HD6.6LV8w/ Security Lighting
2022GMCSierra 3500 HD6.6LV8w/ Security Lighting
2021ChevroletSilverado 1500——w/ Security Lighting
2021ChevroletSilverado 2500 HD6.6LV8w/ Security Lighting
2021ChevroletSilverado 3500 HD6.6LV8w/ Security Lighting
2021GMCSierra 2500 HD6.6LV8w/ Security Lighting
2021GMCSierra 3500 HD6.6LV8w/ Security Lighting
2020ChevroletSilverado 1500——w/ Security Lighting
2020ChevroletSilverado 2500 HD6.6LV8w/ Security Lighting
2020ChevroletSilverado 3500 HD6.6LV8w/ Security Lighting
2020GMCSierra 2500 HD6.6LV8w/ Security Lighting
2020GMCSierra 3500 HD6.6LV8w/ Security Lighting
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
84526543HL7811HLSB10400S10653