Mercedes ML W164 Door Wiring Harness Rear Left Right N/O/S Loom A1644406910

Rear Left/Right Door Harness for Mercedes ML W164 is an original electrical installation component designed to operate the equipment in the rear doors of the body. As part of the Wires, Harnesses, and Connectors group, it ensures proper connection between body modules and door hardware, contributing to stable vehicle electrical system operation. This is a practical solution for users who want to restore full functionality to the rear doors of their Mercedes ML W164 without altering the factory installation architecture.

Specifications and technical data

• SKU: A1644406910
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644406910
• Substitutable numbers: A1644406910, A 164 440 69 10
• Location on the vehicle: Rear, Right, Left
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the Vehicle

The presented door harness is specifically designed for the rear section of the Mercedes ML W164 model, with the possibility of installation on both the left and right sides. It is responsible for transmitting signals and power between the vehicle's main electrical system and the elements located in the doors, such as actuators, control units, or switches. Thanks to factory-standard wiring and appropriately selected connectors, the harness maintains the original installation routing, which facilitates diagnostics and subsequent service maintenance.

Construction and Electrical Compatibility

This harness belongs to the Wires, Harnesses, and Connectors group, meaning it is constructed for stable signal transmission in the demanding environment of car doors. The connectors used are matched to the factory sockets in the body and doors, minimizing the risk of contact looseness and accidental circuit interruptions. The arrangement of wires, segment lengths, and mounting points are adapted to the geometry of the ML W164's rear body section, ensuring an organized installation process consistent with the manufacturer's specifications.

Benefits of Using an Original Harness

Using an original door harness in the Mercedes ML W164 helps avoid problems typical of aftermarket or modified installations. Key benefits include:

• maintaining the factory wiring route in the rear part of the vehicle,
• secure connection with original door and body connectors,
• reducing the risk of communication errors between control modules,
• easier diagnostics of electrical faults within the rear doors.

For the user, this translates to more predictable operation of electrical systems and the ability to efficiently restore functionality after mechanical damage or wire corrosion.

Vehicle Placement and Installation Aspects

The harness is intended for installation in the rear section of the body, with the option of use on the left or right side, increasing flexibility in component selection during repairs. This placement requires resistance to the movement associated with opening and closing doors, so the construction of the wires and connectors is prepared for operation in an area exposed to bending and vibrations. Installation involves routing the harness according to factory mounting points and connecting it to existing connectors, without the need for body structure modifications.

Condition and Service Application

This item is a used part, sourced from disassembly, and is intended for service applications in Mercedes ML W164 vehicles where the original door wiring has been damaged. It is particularly useful for repairs after collisions, door replacements, or damage resulting from operation in harsh conditions. Choosing such a harness helps maintain consistency with the rest of the vehicle's electrical system and reduces the need for modifications.

If you are planning a comprehensive repair or upgrade of the door electrical installation area in your Mercedes and need other parts from the same group, such as wire segments, additional harnesses, or compatible connectors, check the available parts in the Mercedes Wires, Harnesses, and Connectors category.

For those who are simultaneously considering improving their car's performance and want to better understand the possibilities of using aftermarket components, a guide on engine unit modifications may be helpful – you can find it in the article How to Increase Engine Power: A Practical Guide to Tuning Engines with Used Parts.