Standard Ignition HLS1785 Headlight Switch

Headlight Switch for Silverado and Sierra Security Lighting

Standard Ignition HLS1785 is a plug-in headlight switch built for vehicles equipped with security lighting. It uses a 12-terminal layout with a female connector, male pin terminals, and a snap-fit attachment method for a direct electrical replacement.

• Headlight switch function for lighting control
• 12 terminals for the specified vehicle interface
• Female connector with male pin terminals
• Single plug-in connector design
• Plastic finish in black and white
• Snap-fit attachment method

Fitment and Application Details

Compatible with 2020-2023 Chevrolet Silverado 2500 HD, w/ Security Lighting; 2020-2023 Chevrolet Silverado 3500 HD, w/ Security Lighting; 2020-2022 Chevrolet Silverado 1500, w/ Security Lighting; 2022 Chevrolet Silverado 1500 LTD, w/ Security Lighting; 2020-2023 GMC Sierra 2500 HD, w/ Security Lighting; and 2020-2023 GMC Sierra 3500 HD, w/ Security Lighting. This Standard Ignition HLS1785 headlight switch is a direct-fit electrical replacement for Silverado and Sierra trucks listed with security lighting.

For buyers searching by part number, HLS1785 is also referenced in interchange listings for related OE and aftermarket applications. This part cross-references 84526542 and HL7810 for the same application.

What This Switch Helps Address

• Headlight switch failure causing loss of lighting control
• Intermittent or inconsistent switch operation
• Broken or worn electrical connector terminals
• Dash lighting or switch input issues tied to the headlight control circuit
• Replacement needs after connector or internal switch wear

Installation Notes and Tips

Verify the vehicle is equipped with security lighting before ordering. Match the connector style, terminal count, and attachment method to the original switch, and confirm the part number HLS1785 against the removed component for proper fitment on Chevrolet Silverado and GMC Sierra models.

Quality Assurance

Standard Ignition is a recognized name in automotive electrical components, and this switch is built to meet the fitment and connector requirements listed for the specified Silverado and Sierra applications.