Ford Focus Mk3 Rear Taillight Bulb Wire Harness Loom 1709956

Ford Focus Mk3 Rear Taillight Bulb Wire Harness Loom is an original electrical system component designed for the rear of the vehicle, ensuring proper power supply and lighting control. Thanks to the factory connector geometry and appropriately selected wire lengths, the harness enables a secure, stable connection between the lamp and the vehicle's electrical system. This is a practical solution for users who want to restore full lighting functionality without modifying the installation.

Specifications and technical data

• SKU: 1709956
• Mark: Ford
• Condition: Used
• OEM Part Number: 1709956
• Substitutable numbers: 1709956, BM51-13A412-BA, BM5113A412BA
• Location on the vehicle: Rear
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and function in the vehicle

The presented wire harness is designed for installation in the rear of the Ford Focus Mk3, where it is responsible for transmitting signals and power to the taillight. A correctly selected harness is crucial for the operation of position lights, brake lights, turn signals, or license plate lighting, as well as for proper communication with the body electronics. Placement in the rear area of the vehicle means that the component is matched to the factory wire routing, mounting points, and connector layout. As a result, the installation is orderly, and the risk of mechanical damage or insulation abrasion is minimized.

Construction and fitment for Ford Focus Mk3

The Ford Focus Mk3 Rear Taillight Bulb Wire Harness Loom has been designed specifically for the electrical architecture of the Ford Focus Mk3, which translates into compatibility with factory connectors and the layout of connection points. The wires used have the appropriate cross-section and insulation adapted to the operating conditions in the rear of the body, where temperature and humidity changes occur. Original connectors allow for a plug-and-play style installation, without the need for soldering or using additional adapters. Such a solution reduces the risk of installation errors, improves connection reliability, and facilitates future diagnostics of the electrical system.

Component condition and benefits of choosing a used part

The offered harness comes from dismantling and is in used condition, which allows for combining an attractive purchase cost with maintaining the manufacturer's original specifications. For many users, this is a reasonable compromise between price and quality, especially in the case of electrical system components that are not subject to typical wear and tear like mechanical parts. Choosing an original used harness instead of a replacement often means better fitment for the specific vehicle equipment version and greater confidence in compatibility with control modules. If you want to analyze the differences between refurbished and used parts in more detail, the article on choosing between a refurbished and a used original part, which discusses the practical aspects of such service decisions, may be helpful.

Practical application and installation tips

The taillight wire harness is particularly useful in situations where there are lighting problems in the vehicle, such as intermittent light failure, dashboard errors, or signs of overheating near the connectors. Replacing the complete harness is often a faster and more predictable solution than makeshift repairs of individual wires.

• ensures consistency of the electrical system in the rear of the body,
• reduces the risk of incorrect connections and short circuits,
• facilitates the diagnosis of lighting-related faults,
• allows for maintaining the factory wire routing and installation aesthetics. Before installation, it is worth verifying the compatibility of the harness with your car's body and equipment version by using data such as the OEM part number or interchangeable numbers visible in the product's technical specification.

Related components and technical knowledge development

Although the described element concerns a Ford, issues related to the electrical system, circuit load, or cooperation with control modules are common to many modern cars. For a comparison of solutions used in other brands, including high-performance cars, you can read the article comparing the construction of Audi RS models with standard versions, where differences in drive systems and chassis are discussed, among other things. If you are planning a comprehensive repair or upgrade of the rear zone in your Ford and need other components from the same group, such as additional harnesses, connectors, or modules mounted in the trunk area, check the available parts in the Other Ford category.