Ford Focus Mk3 Battery Negative Earth Cable Lead Terminal AV6N-10C679-BC

Ford Focus Mk3 Battery Negative Earth Cable Lead Terminal is a component from the Cables, wiring harnesses and connectors group, responsible for a secure connection between the negative battery terminal and the vehicle chassis ground. This used, original Ford part ensures proper conduction of starting current and stable operation of the electrical system, which translates into trouble-free vehicle starting and correct operation of onboard systems. It is a practical solution for users who want to restore proper ground continuity without investing in a new component.

Specifications and technical data

• SKU: AV6N10C679BC
• Mark: Ford
• Condition: Used
• OEM Part Number: AV6N10C679BC
• Substitutable numbers: AV6N10C679BC, AV6N-10C679-BC
• Part type: Negative Battery Cable
• Category: Wiring Harnesses, Cables & Connectors

The role of the ground cable in the Ford Focus Mk3 electrical system

The negative terminal with the ground cable is responsible for connecting the battery to the body structure, creating an electrical reference for all consumers in the vehicle. A correctly selected and functional ground cable:

• ensures proper flow of starting current to the starter motor and control units,
• stabilizes voltage in the system, limiting drops and interference,
• minimizes the risk of engine starting problems and random electronic errors,
• allows for maintaining correct battery charging parameters. Thanks to the use of an original Ford solution, the mounting geometry and cable length are matched to the structural layout of the Ford Focus Mk3, which facilitates installation and maintains proper harness routing.

Construction and functional features

The ground cable with the negative terminal is a component from the Cables, wiring harnesses and connectors group, designed to operate in the demanding conditions of the engine compartment. The construction includes:

• a negative terminal designed for direct clamping on the battery pole,
• a cable with a cross-section adapted to starting loads and alternator operation,
• a mounting point to the body or a structural element acting as a ground. The original Ford design promotes the maintenance of adequate cable flexibility, resistance to vibration, and proper contact at connection points. This is important from the point of view of long-term operation and reducing energy losses.

Benefits of using an original ground cable

Using a used, original ground cable in a Ford Focus Mk3 allows for a technically correct repair of the power supply system while maintaining the manufacturer's factory concept. Key advantages include:

• Factory fit – correct length, shape, and mounting points of the cable relative to the battery and body.
• Stable electrical parameters – cable cross-section and connector design adapted to starting loads and system operation.
• Reduction of operational problems – reduction of the risk of voltage drops, sparking at the terminal, or overheating of ground connections.
• Economical repair – the possibility of restoring the efficiency of the ground system without the need to purchase a new component.

Selection and practical application

When replacing the ground cable in a Ford Focus Mk3, it is important to maintain the correct harness routing and thoroughly clean the contact points with the body and the battery pole. Proper installation reduces the risk of contact corrosion and local overheating, which can lead to unstable operation of the vehicle's electronics. This element is particularly recommended in situations where symptoms such as difficult starting, flickering lights, sporadic control unit errors, or visible mechanical damage and burnt insulation on the existing ground cable occur. If you are planning a comprehensive repair or upgrade of the electrical system area in your Ford and need other elements from the same group, such as power cables, engine harnesses, or ground connectors, check the available parts in the Ford Cables, wiring harnesses and connectors category.

Additional technical and operational information

When working with the battery and ground system, always disconnect the vehicle's power supply and exercise caution when removing and installing terminals. Proper tightening of bolted connections and checking the condition of contact surfaces have a direct impact on the reliability of the entire power supply system. If you are considering a wider vehicle upgrade and want to better understand the impact of component condition on vehicle behavior while driving, the article comparing different suspension design solutions and issues regarding the selection of used suspension components may be helpful: Standard vs. sports suspension – differences in design and is it worth buying used suspension parts?.