Standard Ignition S-1157 Junction Block Connector

Junction Block Connector for GM Trucks and SUVs

Restore a secure electrical connection with this Standard Ignition junction block connector, part number S-1157. It is built with a male connector, female blade sockets, and a 17-inch harness to service common GM lighting and body electrical repairs on Chevrolet and GMC platforms.

Compatible With 1995-2005 Chevrolet and GMC applications, including Silverado, Sierra, Tahoe, Yukon, Astro, and Safari models. Standard Ignition S-1157 is a direct-fit style junction block connector for repairing damaged wiring at the connector point.

Key Features

• Standard Ignition S-1157 junction block connector
• Male connector with female blade socket terminals
• 3-terminal design with 3-wire harness layout
• 17-inch harness length for repair routing
• Includes butt splices for wire repair connections
• Green 3-terminal female junction block connector application on listed GM vehicles

Detailed Description

This junction block connector is engineered for electrical repair work where the original connector has heat damage, corrosion, broken terminals, or intermittent contact. Standard Ignition uses high-grade materials to support strong conductivity and consistent terminal engagement, helping restore dependable power transfer in lighting and body circuits. The S-1157 is listed for a wide range of Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, Astro, and Safari applications, along with related GM trucks and SUVs from 1995 through 2005.

This part cross-references AC Delco 15305890 and Dorman EC654 for the same application. Use Standard Ignition S-1157 when servicing GM junction block connector failures on Silverado, Sierra, Tahoe, and Yukon electrical systems.

What It Is Used For

• Repairing melted or heat-damaged junction block connectors
• Replacing corroded or loose blade socket terminals
• Restoring intermittent lighting or body electrical connections
• Fixing broken wiring at the connector interface
• Addressing connector failure on GM truck and SUV harnesses

Installation Notes and Tips

Match the connector style, terminal count, and harness routing before installation. Verify the vehicle’s original junction block configuration and compare the existing connector to the S-1157 before cutting or splicing wires. Use proper electrical repair practices when joining the harness and confirm terminal seating after installation.

Quality Assurance

Standard Ignition builds its pigtails and sockets with materials selected for conductivity and reliable electrical contact. The brand’s engineering focus is centered on replacing failed original connectors with repair parts that address common failure points in the field.