BMW E92 Coupe Rear Light Lamp Plug Socket Wiring Left N/S 6984754

BMW E92 Coupe Rear Light Lamp Plug Socket Wiring Left N/S is an original electrical installation component designed to support the rear left lamp in the coupe body. Thanks to the factory connector geometry and proper wire routing, it ensures a stable electrical connection and correct lighting operation. It is a practical solution when replacing a damaged wiring harness after a collision, contact corrosion, or tampering with the installation.

Specifications and technical data

• SKU: 7174403-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7174403
• Substitutable numbers: 63217174403, 7174403, 63214428213, 4428213, 6984754
• Location on the vehicle: Rear, Left
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented wiring harness is a component from the Wires, harnesses, and connectors group, responsible for power supply and control signals for the rear left lamp in the BMW E92 Coupe. Its placement in the rear area of the vehicle on the driver's side allows for direct connection to the factory lamp and body installation, without the need for modifications or creating additional wire sections.

Properly routed wires and matched connectors minimize the risk of voltage drops, flickering lights, or intermittent power supply interruptions, which is important for both driving safety and the absence of errors in the vehicle's control systems.

Construction and electrical compatibility

The harness has been designed as a component dedicated to a specific rear lamp configuration on the left side. The connectors used are prepared to work with the factory lamp socket and the BMW body installation, which facilitates assembly and reduces the risk of errors when connecting the wires.

By maintaining the original pin layout and wire cross-sections, the harness ensures proper electrical parameters for individual lighting functions, such as position lights, brake lights, turn signals, or license plate lighting (depending on the configuration used in a given vehicle unit). This solution helps avoid problems typical of non-factory installation modifications.

Benefits of using an original BMW harness

Using an original wiring harness in the BMW E92 Coupe brings a number of practical benefits:

• secure fit to factory mounting points and wire routing in the body,
• preservation of the correct sequence and function of individual electrical circuits,
• reduction of the risk of errors in the vehicle's diagnostic system related to rear lighting,
• no need for soldering, extending, or adapting universal harnesses.

For the user, this means faster assembly, greater operational predictability, and stable rear lighting performance in daily use.

Service and repair application

The rear left lamp wiring harness will prove particularly useful in situations where the existing installation has suffered mechanical damage, contact overheating, corrosion, or was previously modified in a way that hinders further operation. Replacing the complete harness with an original component allows for restoring the factory wire routing and correct lamp operation without the need for time-consuming regeneration of the old installation.

This solution is recommended both for professional workshops and for users servicing their BMW themselves who expect a predictable repair result and want to avoid problems with unstable rear lighting.

Condition and fitment verification

The item comes from the used parts group, which in practice means it is an original wiring harness from disassembly, retaining the factory construction and connector layout. Before installation, it is recommended to perform a standard visual inspection of the insulation and contacts, as well as to compare the configuration with the currently installed harness in the vehicle to confirm full compatibility.

For additional certainty of fitment, you can use the manufacturer's markings and interchangeable numbers visible in the technical specifications section, which facilitates the identification of the correct electrical installation component for the rear left lamp.

If you are planning a comprehensive repair or upgrade of the rear lighting electrical installation zone in your BMW and need other components from the same group, such as additional harnesses, power cables, or lamp connectors, check the available parts in the BMW Wires, harnesses, and connectors category.