BMW E90 Left Rear Light Trunk Lid N/S Lamp Plug Socket Wiring 6984746

The BMW E90 Left Tailgate Lamp Harness is an original electrical installation component designed to service the rear lighting on the left side of the tailgate. Thanks to its factory design, the harness ensures proper power supply and signals for the lamp, contributing to the safe operation of the brake lights and other functions. This is a practical solution for Series 3 users who want to restore full lighting system functionality without modifying the installation.

Specifications and technical data

• SKU: 6984746
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6984746
• Substitutable numbers: 6984746, 7289427, 63217289427, 4871733, 63214871733, 7154155, 63217154155
• Location on the vehicle: Rear, Left
• Category: Centre & Third Brake Light Assemblies

Application and Function in the Lighting System

The presented harness is a component within the Main and Center Brake Lights category, responsible for connecting the rear lamp in the tailgate to the vehicle's electrical system. Its placement on the left rear side of the vehicle allows for precise integration with the factory wiring routing, maintaining original mounting points and connectors.

Thanks to its dedicated design for a specific generation of the 3 Series, the harness enables:

• stable power supply for the brake light and other functions of the tailgate lamp,
• maintained correct communication with the body electronics,
• reduced risk of errors in the light control system.

Compatibility and Fitment for BMW

The offered BMW E90 Left Tailgate Lamp Harness has been designed as a component compliant with the manufacturer's factory standards. This means that:

• the geometry of the wires matches the original routing within the tailgate,
• the connectors used are prepared for direct connection to the lamp and the vehicle's electrical system,
• there is no need to modify wire lengths or interfere with the factory body harness.

This type of solution is particularly beneficial for repairs following mechanical damage to the tailgate, wire corrosion, or intermittent light operation issues.

Characteristics of a Used Component

The harness comes from a dismantled vehicle, allowing for the preservation of original BMW manufacturing quality while reducing repair costs. A used component is a good choice when you prioritize:

• maintaining compatibility with the factory electrical installation,
• avoiding fitting issues with aftermarket replacements,
• a rational budget for lighting system servicing.

Before installation, a standard check of the insulation and connectors is recommended to ensure long-term and trouble-free operation in daily use.

Benefits of Using an Original Harness

Using a dedicated left-side tailgate rear lamp harness allows for the restoration of full lighting functionality without experimenting with universal wires. The main benefits include:

• secure electrical connection – matched connectors minimize the risk of loose connections and circuit interruptions,
• compatibility with the vehicle's diagnostic system,
• aesthetic wire routing within the tailgate, consistent with the factory layout.

This solution will be particularly appreciated by users who wish to maintain the original installation design in their BMW 3 Series.

Other BMW Main and Center Brake Lights and Technical Knowledge

If you are also looking for other BMW Main and Center Brake Lights, check out the BMW Main and Center Brake Lights available in our store to find a complete solution for your model.

Want to better understand how to care for the electronics in the 3 and 5 Series and how to safely use parts from dismantled vehicles? Read the article Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Parts from Dismantled Vehicles?, where you will find practical tips on working with BMW electrical installations and modules.