Door Wiring BMW G30 F90 G31 Harness Rear Left Right N/O/S 8714783

BMW G30 F90 G31 Rear Left/Right Door Harness is an original electrical installation component designed for installation in the rear left or right door. Thanks to BMW's factory design, the harness ensures proper signal and power routing to door components such as window controls, locks, or lighting. This solution is particularly useful for professional repair or reconstruction of the electrical system in 5 Series G30, G31, and M5 F90 models.

Specifications and technical data

• SKU: 8714783
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8714783
• Substitutable numbers: 8714783, 61128714783
• Location on the vehicle: Rear, Right, Left
• Category: Other Starters, Alternators, ECUs & Wiring

Vehicle Purpose and Placement

The presented door harness is designed for use in the rear section of BMW G-series vehicles, with the possibility of installation on both the left and right sides. It is responsible for the electrical integration of the rear door area with the vehicle's main electrical system, which is crucial for the correct operation of comfort modules and safety systems. The design of the wires and connectors is adapted to the electrical architecture of BMW G30, G31, and F90, facilitating installation without the need for modifications.

Technical and Functional Characteristics

The BMW G30 F90 G31 door harness is manufactured as an OEM component, using wires with appropriate cross-sections, shielding, and color coding consistent with the manufacturer's factory documentation. The connector set is configured to:

• ensure a stable connection with the control modules in the door,
• minimize voltage drops and signal interference,
• maintain proper sealing and resistance to operating conditions within the door space.

This allows the harness to recreate the original wiring path without interfering with factory schematics, which is important for both post-accident repairs and replacement of damaged wire sections.

Application in BMW Service and Repairs

This component is suitable for situations where the electrical system has been damaged due to corrosion, chafing in door grommets, improper repairs, or modifications. Using a complete harness instead of point soldering allows you to:

• limit the risk of subsequent failures related to repair connections,
• maintain installation clarity for future diagnostics,
• ensure compliance with BMW service documentation.

This solution is particularly recommended for workshops specializing in the BMW brand and for owners who expect consistency with the factory installation standard.

Item Condition and Benefits of Choosing a Used Part

The offered door harness is a used part obtained from dismantling. For many BMW owners, this represents a sensible compromise between cost and quality, as an OEM component retains factory fitment while significantly reducing repair costs compared to a new part. A harness of this type is particularly attractive for larger bodywork and electrical jobs where multiple components are replaced simultaneously.

If you want to better plan your service budget and get practical tips on choosing used OEM parts, it's worth reading our guide on saving on car service: how to sensibly use used car parts.

Integration with Other BMW Components and Project Development

The rear left/right door harness is an important component of the entire electrical system in the vehicle's side area, cooperating with comfort modules, window controls, central locking, and interior lighting. For extensive service or modernization projects, it is advisable to consider the entire door and body area as a single system to avoid later interventions.

If you are planning a comprehensive repair or modernization of the side body area in your BMW and need other parts from the same group, such as door harnesses, installation connectors, or additional wire sections, check the available parts in the Other BMW category.

For those interested in comparing technical solutions used in different brands and sports versions, an interesting addition to your knowledge might be an article on the construction of powertrains and chassis in high-performance cars: Audi RS vs. other models – what's under the hood and chassis?.