MAN TG3 Warning Beacon Wiring Diagrams – Rotating Beacon, Flashing Roof Lights, Switch Control & CAN Integration

This technical wiring manual contains the complete electrical schematics for the rotating and flashing warning beacon systems used in MAN TG3 trucks.

The diagrams include the full control architecture for roof-mounted rotating beacons, flashing beacon variants, operating switches, CAN-controlled electronic modules, fuse protection routing and electrical supply connections.

All circuits include connector identifiers, system references and grounding architecture required for professional diagnostics, repair or warning light system troubleshooting.

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Warning Beacon System Components

• Rotating beacon left

• Rotating beacon right

• Flashing beacon variants

• Beacon operating switches

• Central electrical system supply

• SYS_groundNet grounding references

These components form the electrical architecture responsible for emergency and work-site visual warning lighting.

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Control Modules and Electronic Architecture

• EIO1 control module integration

• CAN communication routing for beacon activation

• Control signal wiring from operating switches

• Electronic output routing to roof lighting

These modules manage activation logic and communication with the vehicle electronic system.

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Electrical Supply and Protection

• Fuse-protected beacon power supply

• Terminal +30 electrical routing

• Electrical distribution through central system

• Ground network routing references

These protected circuits ensure stable power delivery for roof warning lighting.

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Wiring Harness Interfaces

• Roof lighting connectors

• Cab wiring carrier interfaces

• Frame electrical routing connectors

• Beacon installation harness terminals

These harness references allow full diagnostic tracing of beacon electrical circuits.

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Diagnostic Use Cases

• warning beacon not activating

• rotating beacon motor not running

• flashing beacon signal faults

• CAN control module activation errors

• fuse or electrical supply faults

• wiring connector troubleshooting

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Compatible Vehicles

• TGX

• TGS

• TGM

• TGL

MAN TG3 platform trucks equipped with rotating or flashing roof warning beacon systems.

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Technical Highlights

• Complete OEM warning beacon wiring diagrams

• Rotating and flashing beacon circuits included

• Driver switch control wiring included

• CAN module activation routing included

• Fuse protection architecture shown

• Full harness routing references included

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Table of Content

Warning Beacon System

• Rotating beacon wiring

• Flashing beacon circuits

• Electrical supply routing

Driver Controls

• Beacon operating switches

• Activation signal routing

Electronic Communication

• CAN routing via EIO module

• Output signal control

Electrical Infrastructure

• Central electrical system supply

• Fuse protection routing

• Ground network references

Wiring Harness Interfaces

• Roof connectors

• Cab wiring interfaces

• Frame harness routing

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