Mercedes ECU connectors can vary depending on the model and year of the vehicle. However, most Mercedes ECUs have a multi-pin connector that connects to the wiring harness. The connector is usually located on the ECU housing, which can be found under the hood or inside the vehicle.

The shape and pin configuration of the connector can vary depending on the ECU model, but it typically has a rectangular shape and a locking mechanism to secure it to the ECU. The number and arrangement of the pins in the connector can also vary, depending on the ECU model and the functions it controls.

If you need more specific information about the ECU connector for your Mercedes vehicle, you should consult the manufacturer's documentation or a qualified automotive technician who can help you identify the correct connector and pin configuration for your specific ECU model.