Keep your lighting circuits joined by a clean, secure link with the Standard Ignition Headlight Connector / Junction Block Connector / Tail Light Connector, MPN S-1241 (also written S1241). This electrical connector splices into the wiring for the headlight, junction block, or tail light circuit, giving worn, brittle, or corroded factory terminals a reliable replacement. It's a direct-fit replacement for a wide range of GM trucks and SUVs, including the 2000-2005 Cadillac DeVille, 1999-2014 Chevrolet Silverado 1500, 2000-2007 Chevrolet Tahoe, 1999-2013 GMC Sierra 1500, 2000-2007 GMC Yukon, 2003-2007 Hummer H2, and 2009 Hummer H3T — see the "Vehicles it fits" section for the full list of 47 applications.
- Built to OE standards: produced in facilities certified to TS16949 and ISO9001 for specific vehicle applications.
- Tested for reliability: connectors undergo quality checks and testing at every stage of production.
- Easy install: factory-assembled and user-friendly, it includes wire connectors and, where applicable, extended lead wires, so no specialized tools are needed.
If a damaged or corroded connector is the cause of a lighting problem, this drops in to restore the circuit connection. Always diagnose the underlying cause before replacing.
Interchange: PT739 · 1582 · EC738 · 15306338
This part cross-references / interchanges with the following part numbers:
PT739, 1582, EC738, 15306338
Frequently Asked Questions
What does the S-1241 connector do?
It's a factory-style electrical connector that joins the wiring for the headlight, junction block, or tail light circuit, replacing worn, brittle, or corroded original terminals.
Will this fit my vehicle?
It's a direct-fit replacement across 47 GM applications, including Cadillac DeVille, Chevrolet Silverado and Tahoe, GMC Sierra and Yukon, and Hummer H2/H3T. Check the "Vehicles it fits" section for the full list.
Does it include the wires and terminals?
Yes. It's factory-assembled and includes wire connectors and, where applicable, extended lead wires, so you can install it without specialized tools.
Why is this listed under three part names?
The same connector is cataloged as a Headlight Connector, Junction Block Connector, and Tail Light Connector, so you may find it under any of those names.
What numbers does this connector interchange with?
It cross-references PT739, 1582, EC738, and 15306338. Match your original connector number to confirm the correct replacement.
