Standard Ignition HLS-1256 Headlight Switch

Reliable Headlight Switch for Select GM and Isuzu Models

The Standard Ignition HLS-1256 headlight switch offers a direct replacement solution for various Buick, Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. Designed for durability and precise fitment, this black plastic switch ensures consistent headlight control with four switch positions.

Key Features of the Standard Ignition HLS-1256 Headlight Switch

• Direct snap fit attachment method for secure installation
• Black plastic finish matching OEM interior components
• Compatible with both female and male rectangular connectors
• Equipped with 15 male blade terminals for reliable electrical connections
• Operates on standard 12-volt vehicle electrical systems
• Four distinct switch positions for versatile headlight control
• Designed specifically for Buick, Chevrolet, GMC, Isuzu, and Oldsmobile models including Trailblazer, Envoy, and Ascender

Detailed Product Description

The Standard Ignition HLS-1256 headlight switch is engineered to meet the electrical and functional requirements of multiple GM and Isuzu vehicles. Its direct snap fit attachment method allows for straightforward replacement without the need for additional hardware. The switch features a durable black plastic finish that integrates seamlessly with vehicle interiors. With two rectangular connectors—one female and one male—and 15 male blade terminals, this switch ensures secure and stable electrical connections. The four-position switch design provides precise control over headlight functions, making it suitable for models such as the Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Isuzu Ascender, and Oldsmobile Bravada.

Common Applications and Issues Addressed

• Restores headlight functionality in vehicles with faulty or worn switches
• Eliminates intermittent headlight operation caused by poor electrical contacts
• Replaces broken or damaged switch housing or terminals
• Resolves issues with switch positions not engaging properly
• Upgrades aging switches to maintain consistent lighting control

Installation Notes and Tips

• Ensure vehicle battery is disconnected before installation to prevent electrical shorts
• Remove the existing headlight switch by gently releasing the snap fit attachment
• Verify connector orientation—female and male rectangular connectors must align correctly
• Confirm all 15 blade terminals are fully seated for proper electrical contact
• Test headlight operation through all four switch positions before reassembling the dashboard

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and fitment. The HLS-1256 headlight switch undergoes rigorous quality control testing to verify electrical integrity and mechanical durability. This part is backed by Standard Ignition's limited warranty, covering defects in material and workmanship under normal use conditions.