• 54.00 General17
• 54.10 Battery, power supply, voltage converter16
• 54.18 Cable harnesses2
• 54.20 Module box6
• 54.22 Diagnostic test coupling/diagnostic socket9
• 54.25 Switches6
• 54.30 Instrument cluster, display instruments, hazard warning device18
• 54.31 Main control panel, electrics compartment4
• 54.35 Signaling system7
• 54.61 Speed recorder, trip recorder, taximeter11