Mercedes W205 Battery Cable Negative Lead Wiring Harness Control A2055401516

Mercedes W205 negative ground cable with battery terminal is an original part from the category of cables, harnesses, and connectors, designed for the power system in vehicles of this series. It ensures a stable connection between the negative battery terminal and the vehicle's body ground, which translates to proper operation of the electrical system and the starter.

Specifications and technical data

• SKU: A2055401516
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055401516
• Substitutable numbers: A2055401516, A 205 540 15 16
• Part type: Negative Battery Cable
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the Electrical System

The negative ground cable with battery terminal for Mercedes W205 is responsible for safely conducting current from the vehicle's electrical system to ground. A correctly selected and functional ground cable is crucial for:

• stable engine starting – minimizing voltage drops during engine startup,
• proper operation of control units and modules – providing a reference ground for onboard electronics,
• reduction of electrical interference – improving signal quality in the system, including safety and comfort systems.

This component is part of the factory power supply system, which facilitates its integration with the existing wiring harness and mounting points in the body.

Construction and Fitment for Mercedes W205

The cable belongs to the cables, harnesses, and connectors category, meaning it is designed for operation in the demanding environment of the engine bay. Its construction includes:

• a dedicated negative battery terminal – adapted for the standard battery post used in the W205,
• appropriately selected cable length and cross-section – ensuring proper conductivity and fit with factory ground points,
• end connectors – prepared for installation in original mounting locations in the body or on structural components.

This ensures the cable maintains compatibility with the factory wiring routing geometry, simplifying installation and reducing the risk of chafing or excessive stress.

Benefits of Using an Original Ground Cable

Using an original ground cable in a Mercedes W205 helps maintain the integrity of the entire electrical system. Key benefits include:

• factory fitment – compatibility with standard mounting points and system parameters,
• adequate conductivity – minimizing energy loss and voltage drops in critical circuits,
• stable ground for safety systems – supporting the proper functioning of systems such as ABS, ESP, and driver assistance systems,
• easier diagnostics – maintaining the original system architecture simplifies servicing and electrical measurements.

Replacing a worn or corroded ground cable with an original part from the same product line allows for the restoration of correct system operating conditions without the need for wiring modifications.

Item Condition and Service Application

The offered ground cable is in used condition, making it an attractive service solution for vehicles where component replacement is necessary while maintaining reasonable costs. This type of part is particularly suitable in situations where:

• the existing cable shows signs of corrosion or overheating,
• there are starting problems or unstable voltage in the system,
• the vehicle has undergone body repairs and it is necessary to restore factory ground connections.

A used OEM part allows for adherence to factory solutions, which is important both for reliability and subsequent diagnostics.

Other Mercedes Cables, Harnesses, and Connectors

If you also need other Mercedes cables, harnesses, and connectors for expanding or repairing the electrical system, check out our dedicated offer: Mercedes cables, harnesses, and connectors. You will find a wide selection of system components tailored to various models of this brand.

For those interested in the topic of selecting used OEM parts and their impact on vehicle characteristics, we also recommend the guide article: Go-Kart Feeling XXL – comparison of used N18 and B48 turbochargers in Mini Cooper S, which discusses practical aspects of component selection and installation based on real service experience.