Mercedes H243 EQA Socket Wiring Plug Loom Orange A7895402203

The Mercedes H243 EQA Charging Socket Harness is an original part from the Cables, Harnesses, and Connectors group, designed for the high-voltage system in electric vehicles of this series. The distinctive orange color of the cable highlights its purpose for HV circuits, facilitating identification during diagnostics and service work.

Specifications and technical data

• SKU: A7895402203
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A7895402203
• Substitutable numbers: A7895402203, A 789 540 22 03
• Color: Orange
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the High-Voltage System

This charging socket harness is a component of the high-voltage installation in the electric Mercedes H243 EQA, responsible for the safe connection of the charging socket to the rest of the system. Stable cable routing and appropriately selected connectors minimize the risk of voltage drops and interference, leading to predictable charging parameters.

The orange color of the cable insulation is a standard for HV circuits in automotive applications, enhancing operational safety and making it easier to distinguish from low-voltage installations. This provides the technician with quick visual access to key sections of the high-voltage system.

Construction, Color Coding, and Installation Aspects

The harness is designed as a complete socket wiring plug loom, including the cable and appropriately selected connectors. The arrangement of the wires and the shape of the harness are adapted to the body geometry of the H243 EQA, facilitating installation in factory mounting points and reducing mechanical stress.

The orange color of the cable not only meets safety requirements but also aids in quickly tracing the harness path during inspections and repairs. This simplifies the inspection of insulation condition, mounting points, and any signs of overheating or mechanical damage.

Benefits of Using an Original Mercedes Harness

Using the original charging socket harness in the Mercedes H243 EQA ensures:

• consistency with the vehicle's factory electrical architecture,
• proper matching of connectors to the charging socket and other system components,
• maintenance of safety parameters for high-voltage circuits,
• easier diagnostics based on manufacturer documentation.

This helps to reduce the risk of communication problems between control modules and the charging system, and minimizes the need for installation modifications. This solution is particularly beneficial for professional repairs and servicing of electric vehicles, where consistency with the original installation design is crucial.

Component Condition and Service Application

The offered harness is a used part, making it an attractive cost-effective alternative while maintaining the original manufacturer's specifications. Such components are frequently used in professional workshops specializing in electric vehicles, especially for post-accident repairs, replacement of damaged charging sockets, or restoring HV system continuity.

Before installation, a standard procedure of checking the condition of the insulation, connectors, and mounting points is recommended to ensure safe operation in the demanding high-voltage environment.

Related System Components and Additional Materials

If you are planning a comprehensive repair or upgrade of the high-voltage electrical installation area in your Mercedes and need other parts from the same group, such as additional harnesses, connectors, or HV cable sections, check the available parts in the Mercedes Cables, Harnesses, and Connectors category.

For a better understanding of the relationship between the electrical system and vehicle power supply, it is advisable to consult technical materials on power supply systems and diagnostics – the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Regeneration, which discusses, among other things, component selection by OEM numbers and principles of proper operation, may be helpful.