Ford Fiesta Mk7 Door Wiring Loom Harness Rear Right O/S C1BT-14240-ADD

Ford Fiesta Mk7 Door Wiring Loom Harness Rear Right O/S is an original electrical system component designed for the rear right side of the vehicle body. Thanks to its factory-fit for the specific Ford model, it ensures reliable electrical connections, stable operation of electrical components, and easier fault diagnostics. It is a practical solution when replacing a damaged harness following a collision, connector corrosion, or unauthorized modifications to the installation.

Specifications and technical data

• SKU: C1BT-14240-ADD
• Mark: Ford
• Condition: Used
• OEM Part Number: C1BT-14240-ADD
• Substitutable numbers: C1BT-14240-ADD, C1BT14240ADD, 1851139
• Location on the vehicle: Rear, Right
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and vehicle placement

The presented wiring harness is dedicated to the rear right door of the Ford Fiesta Mk7. It is responsible for transmitting signals and power between the body harness and components located in the rear right door, which helps maintain the consistency of the vehicle's factory electrical architecture. Placement in the rear right door area means the harness works with components such as actuators, window regulators, or lighting, depending on the specific vehicle configuration. Using an original harness from the Wires, harnesses, and connectors category reduces the risk of compatibility issues and eliminates the need for installation modifications.

Technical and functional characteristics

The harness was designed by the vehicle manufacturer, taking into account current loads, wire lengths, and connector placement, which translates into:

• correct routing of wires through the grommets between the body and the door,
• proper positioning of connectors in factory mounting points,
• maintaining the correct pin sequence in the plugs, in accordance with Ford service documentation. As a result, installation is orderly, and the risk of incorrect connection is minimized. The original design of the harness also promotes stable operation of comfort systems and facilitates subsequent service maintenance, including voltage and resistance measurements on individual circuits.

Benefits of using an original Ford harness

Choosing an original wiring harness for the Ford Fiesta Mk7 is a beneficial solution for both workshops and individual users. Key advantages include:

• factory fit for the specific body version and rear right door,
• compliance with Ford's technical documentation and electrical diagrams,
• reduction of installation errors typical of universal replacements,
• easier wire identification during system diagnostics. The product from the Wires, harnesses, and connectors category allows for the restoration of proper system operation in the door area without the need to reconstruct the entire wire section, which shortens repair time and reduces labor costs.

Use in repairs and upgrades

The rear right door wiring harness is particularly useful in situations involving:

• mechanical damage to wires in the grommet between the pillar and the door,
• broken or shorted circuits resulting in non-functional features in the rear right door,
• the need to replace the door along with the installation after a collision or bodywork repairs. Using a complete, original harness allows for the restoration of the factory installation path, which is particularly important in vehicles where trouble-free operation of electrical systems and compliance with manufacturer service procedures are prioritized. If you are planning a comprehensive repair or upgrade of the door electrical system in your Ford and need other components from the same group, such as additional wire sections, complete door harnesses, or dedicated connectors, check out the available parts in the Ford Wires, harnesses, and connectors category.

Why choose used OEM components

Choosing a used, original wiring harness is a reasonable compromise between quality and repair cost. An OEM component retains its factory geometry, connector type, and compatibility with the vehicle's installation, which is particularly important when working with electrical systems. For those interested in a broader context of the used parts market and automotive trends, the following article may be useful: Crisis in the new parts market? Why used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend in 2026.

Summary

Ford Fiesta Mk7 Door Wiring Loom Harness Rear Right O/S is a practical solution for those who want to restore full functionality to the electrical system in the rear right door without compromising on fitment. The original design, dedicated vehicle placement, and well-thought-out wire architecture make this product a safe and technically correct base for repairing or replacing a damaged harness in a Ford Fiesta Mk7.