Standard Ignition S3019 Side Marker Light Connector - Front

Side Marker Light Connector for Ford and GM Applications

Standard Ignition S3019 is a weatherproof sealed side marker light connector built with a 16-gauge, 4-wire harness and a round male connector body. With a 12.5-inch harness length and blade-style female terminals, it is built for direct electrical repair work on select Ford, Lincoln, Chevrolet, GMC, Dodge, Mazda, and Mercury vehicles.

• Round male connector with blade-style female terminals
• 16 ga. wiring with 4-wire construction
• Weatherproof sealed design
• 12.5-inch harness length for service routing
• Housing length: 1 1/2 in.
• Standard Ignition S3019 replacement connector

Detailed Product Information

This Standard Ignition S3019 side marker light connector is intended for electrical connector repair where the original side marker lamp plug is damaged, corroded, or no longer locking securely. The sealed housing and 16-gauge wiring support a dependable connection in exterior lighting circuits, while the round connector shape and 0-degree bend angle simplify routing in tight front and rear lamp areas. This part cross-references Ford BU2Z14S411TA and EC3022 for the same application.

Compatible vehicle coverage includes Ford Transit-150, Transit-250, Transit-350, Transit-350 HD, E-Transit, E-350 Super Duty, Mustang, Expedition, Explorer, Mustang Mach-E, and Transit; Chevrolet Silverado 1500, Silverado 2500 HD, and Silverado 3500 HD; GMC Sierra 1500, Sierra 2500 HD, and Sierra 3500 HD; plus Dodge Challenger, Lincoln Navigator, Mazda Tribute, and Mercury Mariner. Standard Ignition S3019 is also listed for Ford Escape and Ford Explorer with halogen headlights.

Common Problems This Connector Can Address

• Broken or heat-damaged side marker light connector housing
• Corrosion at the lamp plug causing intermittent lighting
• Loose terminal contact at the side marker circuit
• Cracked wiring insulation near the front or rear lamp area
• Failed connector retention from age, vibration, or moisture exposure

Installation Notes and Tips

Verify connector shape, terminal style, and harness length against the original part before installation. Match the vehicle application carefully, especially on Ford Explorer models with halogen headlights and on rear lamp applications for Silverado and Sierra trucks. Inspect the mating terminals and surrounding wiring for corrosion or heat damage before connecting the replacement harness. Standard Ignition S3019 is a direct electrical service part for side marker light repair on select Ford Transit and Mustang applications, as well as other listed vehicles.

Quality Assurance

Standard Ignition supplies electrical service parts for OE-style repair work, and this connector is built with a weatherproof sealed housing to support exterior lighting connections. Part number S3019 is specified for select vehicle applications and cross-references known OE and aftermarket numbers for the same use.