Ford Focus Mk3 Rear Tail Light Lamp Wiring Loom Harness Left N/S BM51-13405-AK

Ford Focus Mk3 Rear Tail Light Lamp Wiring Loom Harness Left N/S is an original electrical system component designed to support the rear lighting on the driver's side. Thanks to its factory-fit design for the specific Ford model, it ensures a stable electrical connection and proper operation of the tail light. It is a practical solution for post-collision repairs, damaged wiring, or power supply issues.

Specifications and technical data

• SKU: 1825321-2
• Mark: Ford
• Condition: Used
• OEM Part Number: 1825321
• Substitutable numbers: 1825321, BM51-13405-AK, BM5113405AK
• Location on the vehicle: Rear, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented wiring harness belongs to the Wires, harnesses, and connectors category and is dedicated to installation in the rear left part of the Ford Focus Mk3 body. It is responsible for supplying power and control signals to the tail light, which directly affects the operation of the position lights, brake lights, turn signals, or reversing lights – depending on the vehicle configuration. The placement on the rear left side of the vehicle allows for precise routing of the wires in accordance with the factory installation path, which reduces the risk of chafing, short circuits, and electrical contact issues.

Construction and fitment for Ford Focus Mk3

The harness has been designed specifically for the third-generation Ford Focus, which translates into:

• appropriate wire length matched to the body geometry,
• connectors compatible with the tail light and the vehicle's electrical system,
• factory-style wire routing, facilitating installation in the original mounting points. As a result, this component can be used as a direct replacement for a damaged harness without the need for installation modifications, soldering, or creating additional adapters.

Benefits of using an original Ford harness

Choosing an original tail light wiring harness for the Ford Focus Mk3 primarily ensures:

• compliance with factory safety and reliability standards,
• certainty of proper connector fitment and wire routing,
• reduction of the risk of installation errors that could cause light failure messages or unstable lighting operation. The item from the Wires, harnesses, and connectors category is particularly important during repairs following mechanical damage, contact corrosion, or tampering with the installation, when it is necessary to restore the correct, factory-standard wiring layout.

Product condition and service application

The offered harness is a used part, which makes it an attractive solution for maintenance repairs and vehicle servicing where a reasonable balance between cost and functionality is important. This type of component is suitable for both workshops specializing in the Ford brand and users servicing their own cars who expect a proven, original solution instead of universal replacements. If you are considering when to choose a used part versus a new one, the guide article Car parts – new or used? We compare costs, quality, and durability, which discusses the differences in costs, durability, and availability of components, may be helpful.

Expanding rear installation repairs in your Ford

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Ford and need other elements from the same group, such as additional harnesses, wire sections, or lamp connectors, check out the available parts in the Ford wires, harnesses, and connectors category.