SKP SKGPH1056 Diesel Glow Plug Wiring Harness - Left or Right

Diesel Glow Plug Wiring Harness for Ford Super Duty

SKP SKGPH1056 is a diesel glow plug wiring harness for select 2003-2004 Ford Excursion, F-250 Super Duty, and F-350 Super Duty applications. It is listed for left and right positions on vehicles built to 9/23/03, making it a direct-fit service part for the correct engine-side routing.

• Diesel glow plug wiring harness for secondary ignition service
• Fits 2003-2004 Ford Excursion, left and right, to 9/23/03
• Fits 2003-2004 Ford F-250 Super Duty, left and right, to 9/23/03
• Fits 2003-2004 Ford F-350 Super Duty, left and right, to 9/23/03
• Cross-references Standard Ignition GPH105 and GPH106 for the same application
• Part number SKGPH1056 for fitment verification and ordering

Detailed Fitment and Function

This SKP glow plug wiring harness is used to restore the electrical connection between the glow plug circuit and the engine harness on diesel-equipped Ford trucks and SUVs. For 2003-2004 Ford Excursion, Ford F-250 Super Duty, and Ford F-350 Super Duty models, correct harness routing is important for reliable glow plug operation and consistent cold-start performance. The SKGPH1056 part number is also referenced by OE-style interchange numbers 3C3Z12A690AA and 3C3Z12A690BA.

What It Helps Address

• Intermittent or failed glow plug electrical connection
• Hard starting in cold weather on diesel engines
• Open, damaged, or heat-affected harness wiring
• Incorrect glow plug circuit routing on left or right side applications
• Diagnostic trouble codes related to glow plug circuit faults

Installation Notes and Tips

Verify engine build date before ordering, since this harness fits vehicles built to 9/23/03. Confirm left or right side routing against the original harness layout on the vehicle, and inspect related connectors and terminals for heat damage or corrosion before installation. Use the existing factory routing points and secure the harness away from exhaust heat and moving components.

Quality Assurance

SKP replacement parts are cataloged for direct application matching, and SKGPH1056 is listed with OE-style interchange references for fitment confirmation. Always verify the part number and vehicle build date against the original component before installation.