This technical wiring manual contains the complete electrical schematics for the 24V trailer charging power system used in MAN TG3 trucks.
The diagrams include the full control architecture for the trailer charge socket, relay activation wiring, fuse-protected electrical supply routing and grounding connections for trailer electrical charging systems.
All circuits include connector identifiers, system references and grounding architecture required for professional diagnostics, repair or trailer electrical troubleshooting.
Diagnostic Use Cases
trailer charge socket not supplying power
relay not activating trailer charging
blown trailer fuse faults
trailer electrical supply instability
wiring or grounding troubleshooting
Compatible Vehicles
TGX
TGS
TGM
TGL
MAN TG3 platform trucks equipped with trailer charging power system.






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