Mercedes H243 EQA Cable Wiring Harness Loom A7895407300

The Mercedes H243 EQA Cable Wiring Harness Loom is an original component from the Wires, Harnesses, and Connectors group, designed for professional electrical system servicing in Mercedes vehicles. This used OEM component ensures factory-correct wire geometry, connector fitment, and stable onboard system operating parameters, facilitating service and minimizing compatibility issues.

Specifications and technical data

• SKU: A7895407300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A7895407300
• Substitutable numbers: A7895407300, A 789 540 73 00
• Category: Wiring Harnesses, Cables & Connectors

Technical Characteristics of the Harness

The presented harness belongs to the Wires, Harnesses, and Connectors category, meaning it is responsible for the organized routing of signals and power between various vehicle modules. The connectors used are factory-matched to the Mercedes installation, allowing for installation without the need for system modifications or adapters.

The original wire construction minimizes voltage drops and interference, while proper wire distribution facilitates servicing and diagnostics. This solution is particularly beneficial for collision repairs, module replacements, or restoring full electrical system functionality.

Intended Use and Application in Mercedes Vehicles

The wiring harness is specifically designed for Mercedes vehicles, ensuring compatibility with factory mounting points, segment lengths, and connector types. This allows the component to be used for standard replacement of damaged harnesses as well as for more extensive electrical system servicing.

Properly routed wires help maintain order in the engine bay, reduce the risk of insulation abrasion, and facilitate access to other components during subsequent repairs. This is particularly important in modern designs with high component density.

Benefits of Using an Original Harness

Using an original harness from the Wires, Harnesses, and Connectors group instead of universal or custom-made parts helps maintain the electrical system's consistency with the manufacturer's service documentation. This simplifies subsequent computer diagnostics, fault localization, and integration with factory schematics.

Key advantages include:

• factory-matched connectors for Mercedes modules and sensors,
• organized wire routing consistent with the original design,
• reduced risk of installation errors due to system modifications,
• better repeatability of electrical parameters compared to non-original solutions.

Component Condition and Installation Aspects

The offered wiring harness is a used component, meaning it comes from a dismantled vehicle and may show signs of wear typical for this type of part. Before installation, a standard inspection of connectors, insulation, and mounting points is recommended to ensure trouble-free operation in the target vehicle.

The harness installation should be performed according to Mercedes service documentation, maintaining original wire routing paths and proper fastening of clamps and brackets. This approach minimizes the risk of subsequent failures due to mechanical stress or incorrect wire positioning relative to other components.

Expanding Works within the Mercedes Electrical System

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and require other components from the same group, such as additional harnesses, signal wires, or service connectors, check the available parts in the Mercedes Wires, Harnesses, and Connectors category.

For drivers interested in further vehicle personalization, including improving driver's seat ergonomics by replacing the steering wheel with a sport or premium version, the guide article Personalization and Ergonomics – When is it Worth Replacing the Steering Wheel with a Premium Model?, discussing the practical aspects of such a modification, may be helpful.