Standard Ignition S2638 Tail Light Wiring Harness - Right

Tail Light Wiring Harness for GM Trucks

Standard Ignition S2638 is a tail light wiring harness built for the right side of select Chevrolet Silverado and GMC Sierra trucks. It uses a 5-position rectangular connector, 18-gauge wire, and a 77-inch harness length to match the electrical routing needed at the rear of the vehicle.

For Silverado and Sierra owners replacing damaged rear lighting wiring, Standard Ignition S2638 provides a direct-fit tail lamp harness solution for the right rear position. It is a practical choice for restoring tail light circuit continuity on 2007-2014 GMC Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, and 2011-2014 Chevrolet Silverado 2500 HD applications.

Key Features

• Tail light wiring harness for the right rear position
• 5-pin rectangular connector design
• 18-gauge wire construction
• 77-inch harness length for rear lighting routing
• Male connector with female blade terminals
• 4-wire harness layout with 4 blade terminals
• Standard Ignition S2638 part number for catalog matching

Detailed Description

Standard Ignition S2638 is engineered as a replacement tail light wiring harness for GM full-size pickup applications. The harness features a rectangular connector housing, male connector interface, and female blade terminals to support the rear lamp electrical connection on the right side. With 4-wire construction and 18-gauge conductors, it is built to match the wiring needs of the tail light circuit while maintaining a clean OE-style fitment profile. This part cross-references AC Delco 15824513 and 25958497 for the same application.

Compatible With 2011-2014 Chevrolet Silverado 2500 HD, right; 2007-2014 GMC Sierra 2500 HD, right; 2007-2014 GMC Sierra 3500 HD, right; and 2007-2013 GMC Sierra 1500, right. Standard Ignition S2638 is a direct replacement reference for these rear lighting applications and is commonly searched as a right tail light wiring harness for GMC Sierra and Chevrolet Silverado trucks.

Common Problems It Can Help Solve

• Broken or heat-damaged rear lamp wiring
• Intermittent tail light operation on the right side
• Corroded connector terminals at the rear lamp assembly
• Electrical faults caused by damaged harness insulation
• Loss of continuity in the tail light circuit after repair work

Installation Notes and Tips

Verify connector shape, terminal style, and right-side routing before installation. Compare the existing harness to the S2638 connector layout and wire count to confirm match-up with the vehicle’s rear lighting connector. On GM Silverado and Sierra trucks, inspect the lamp socket, connector cavity, and adjacent wiring for corrosion or heat damage before connecting the replacement harness.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical replacement parts, and S2638 is cataloged to match the specified GM truck applications listed above. Confirm fitment by year, model, and right-side position before ordering.