BMW F31 LCI Rear Lamp Light Side Panel Left N/S Plug Socket Wiring 1-2141397-1

BMW F31 LCI Wiring Harness Connector Socket Rear Left Lamp 1-2141397-1 is a factory wiring harness designed for the rear left lamp in facelifted BMW 3 Series F31 models. The component ensures proper power supply and electrical communication between the vehicle's system and the rear lighting assembly, which translates to safe operation of the rear and brake lights. This is a practical solution for users who want to restore full lighting functionality after damage to the harness or socket.

Specifications and technical data

• SKU: 7372209-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7372209
• Substitutable numbers: 7372209, 63217372209, 1-2141397-1, 121413971
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and Fitment for BMW F31 LCI

The lamp socket connector wiring harness has been specifically designed for the facelifted (LCI) BMW F31 touring body, taking into account the electrical requirements for rear lights and brake lights. Its location on the vehicle is the rear left side, which facilitates unambiguous identification of the component during repair or system upgrade.

Thanks to its construction in accordance with factory BMW standards, the harness allows for the preservation of original wire routing, proper socket placement, and a stable connection with the lamp. This is particularly important when working with light control modules, which are sensitive to the quality of contacts and the correctness of connections.

Construction and Function of the Lamp Socket Wiring Harness

The presented wiring harness acts as an intermediary between the vehicle's main electrical system and the rear left lamp. The connector consolidates wires responsible for, among other things:

• powering position and brake lights,
• transmitting control signals from body modules,
• providing a stable ground connection for the entire lighting assembly.

This solution reduces the risk of loose connections, overheating wires, and lighting malfunctions, which can result in dashboard warnings or incorrect light operation.

Benefits of Using Genuine BMW Wiring Harness

Using a dedicated wiring harness for the rear left lamp socket provides a number of practical benefits:

• Compatibility with BMW System – the harness is prepared to work with factory connectors and modules, without the need for modifications.
• Stable Electrical Connections – appropriately selected contacts and wire gauges minimize voltage drops and lighting interference.
• Easy Installation – unambiguous placement on the vehicle (rear, left side) allows for efficient repair or replacement of a damaged component.
• Consistency with Factory Installation – preserving the original harness routing facilitates subsequent diagnostics and servicing.

Component Condition and Service Application

The lamp socket connector wiring harness falls under the category of Rear Lights and Brake Lights, which clearly defines its function in the vehicle. The component is primarily intended for service applications – replacing a damaged, melted, or corroded harness at the rear left lamp. This is a practical solution in situations where lighting problems occur, errors appear in the lighting control system, or visible damage to the connector is present.

By maintaining the factory geometry of the connector and wires, installation can be carried out in an organized manner, preserving the original routing of the harness in the tailgate or body, depending on the specific lamp configuration in the BMW F31 LCI.

Other BMW Rear Lights and Brake Lights and Service Tips

If you are also looking for other BMW rear lights and brake lights, check out the BMW rear lights and brake lights available in our store to find a complete solution for your model. For drivers planning a wider range of service work on their car, a guide describing the most frequently replaced wear parts may be useful – read the article "TOP 10 Most Frequently Replaced Parts in Your Car" to better plan your vehicle's maintenance and upkeep.