BMW G20 LCI Rear Outer Light Lamp Side Panel Wiring Cable Right O/S 5A3BC98

The BMW G20 LCI Rear Outer Right Tail Light Wiring Harness is an original electrical component designed for the right outer tail light in the G20 LCI (facelift) body style. Thanks to its factory-matched connector geometry and vehicle-specific fit, it ensures a stable electrical connection and proper lighting operation. This is a practical solution for replacing a damaged harness after a collision, body repair, or issues with the lamp's power supply.

Specifications and technical data

• SKU: 5A3BC98-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A3BC98
• Substitutable numbers: 5A3BC98
• Location on the vehicle: Rear, Right
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the BMW G20 LCI Electrical System

The presented wiring harness belongs to the Cables, Harnesses, and Connectors group and is specifically designed to serve the rear outer right tail light in the BMW 3 Series G20 LCI (facelift). It is responsible for:

• transmitting power to the individual sections of the tail light (position lights, brake lights, turn signals, etc.),
• ensuring a stable connection with the vehicle's main electrical system,
• minimizing voltage drops and interference in lighting operation,
• safely routing wires within the rear body section.

With its dedicated placement in the rear – right side area, the harness allows for maintaining the factory wire routing and correct positioning of connectors relative to the tail light and bodywork.

Construction, Connectors, and Mounting Fit

The harness is configured for the specific connectors of the outer rear tail light and for connection to the BMW vehicle's electrical system. Appropriately selected wire gauges and connector types are adapted to the current loads typical for LED/incandescent lighting used in the G20 LCI. Key mounting features include:

• factory connectors that fit the right outer rear tail light,
• wires with lengths matched to the G20 body geometry,
• harness routing that allows for correct mounting in original attachment points.

This solution facilitates installation and reduces the risk of wire strain, insulation abrasion, or loose connections, which translates to reliable rear lighting operation in daily use.

Service Application and Benefits of Replacement

The outer rear right tail light wiring harness is particularly useful in situations where:

• mechanical damage to wires or plugs has occurred due to a rear-end collision,
• intermittent lighting failures, errors in the light control system, or communication problems between the lamp and the car's electronics are present,
• the tail light needs replacement with a functional unit, and the existing harness shows signs of overheating, contact corrosion, or unprofessional repairs.

Using an original, dedicated BMW harness avoids electrical system modifications, "on-car" soldering, or the use of universal adapters. This solution promotes the preservation of factory electrical system reliability and proper integration with the vehicle's diagnostic systems.

Used Product Characteristics

This item is from the used parts category, meaning it has been previously used in a vehicle but has been verified for its suitability for installation. For wiring harnesses, it is important that:

• the wire insulation maintains its integrity and flexibility,
• the connectors are not melted or excessively corroded,
• the wires show no signs of unprofessional repairs.

Choosing such a component offers a sensible compromise between cost and maintaining the original specifications of the BMW electrical system, especially for post-accident repairs or restoring full rear lighting functionality.

If you are planning a comprehensive repair or upgrade of the rear lighting area 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 Cables, Harnesses, and Connectors category.

For drivers interested in a broader context of upgrading and selecting used parts for sports and compact cars, an article describing the evolution of a popular hot hatch might be helpful – Hot Hatch Legend: The Evolution of the VW Golf GTI from Mk1 to Mk8 – Construction Changes and VW Car Parts, which discusses, among other things, the practical aspects of component replacement and the impact of components on vehicle operation.