This comprehensive set of Wiring Diagrams provides detailed visual representations of the electrical system in the K-90 MAN Trucknology Generation A (TG-A) model.

Key Features and Benefits:

  • Accurate and detailed diagrams enable easy identification of electrical components and circuits.
  • Color-coded wiring simplifies circuit tracing and troubleshooting.
  • Comprehensive coverage includes all major electrical systems, including:
    • Engine management
    • Lighting
    • Instrumentation
    • Comfort and convenience
  • Tailored specifically for the K-90 MAN Trucknology Generation A (TG-A), ensuring accuracy and relevance.
  • Empowers users to understand and troubleshoot electrical issues with greater ease and precision.

Technical Specifications and Details:

Electrical System:

  • 24-volt negative ground system
  • Battery capacity: 225 Ah
  • Alternator output: 280 amps

Major Electrical Components:

  • Engine control module (ECM)
  • Ignition coil
  • Starter motor
  • Voltage regulator
  • Headlight switch
  • Turn signal switch
  • Wiper switch

Wiring Diagrams:

  • Engine management system
  • Fuel injection system
  • Ignition system
  • Lighting system
  • Instrumentation system
  • Comfort and convenience system

Maintenance and Repair Information:

Electrical Troubleshooting:

  • Use the wiring diagrams to identify and trace electrical circuits.
  • Inspect wiring harness for damage or loose connections.
  • Consult a qualified technician for complex electrical repairs.

Electrical Component Replacement:

  • Refer to the wiring diagrams for component locations and wiring connections.
  • Use genuine MAN parts for optimal performance and reliability.

This comprehensive set of Wiring Diagrams for the K-90 MAN Trucknology Generation A (TG-A) Electrical System is an invaluable resource for owners, technicians, and enthusiasts alike. Its detailed and accurate diagrams empower users to understand, troubleshoot, and repair electrical systems with confidence and precision.

All series and additional wiring diagrams are documented in the instructions for the “wiring diagrams“. The series wiring diagrams (Ch. 3.00) and the additional wiring diagrams (Ch. 4.00) are shown in detail to include legends and the names of the circuits.

The present manual is based on wiring diagrams that have been created with the help of a graphics program (CAD). This allows the instructions to be updated at short notice.


  • Electrical system
  • Preface
  • Contents
  • Abbreviations

General remarks

  • Safety notes
  • Instructions for the use of wiring diagrams
  • Search criteria

Series wiring diagrams

Additional wiring diagrams

Language: English
Format: PDF
Pages: 606