MAN TG3 Auxiliary Power Supply Wiring Diagram – TGX/TGS Euro 6d (Q4 2020)

This official schematic provides a complete overview of the Auxiliary Power Supply system used in MAN TG3 TGX/TGS Euro 6d trucks, dated Q4 2020 and sourced from MAN Truck & Bus SE in Werk München.

The diagram includes all 12V and 24V accessory power outlets and components, including:

• Steckdosen (sockets) on dashboard, roof, and sleeper area
• USB charger module (A1390.1)
• Central electrical interface (A100.1)
• Fuses F1529.1 and F1549.1 for socket groups
• Pin-level details for connectors like X6431, X6432, and X311

Ideal for:

• Diagnosing faulty 12V/24V outputs
• Planning aftermarket upgrades
• Retrofits or inverter installations
• CAN-safe auxiliary systems servicing

Includes clear labeling of Klemme 30, Klemme 31, and USB-specific circuit paths.

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