- A Starting - recharging
 - B Various fuse holders and valves
 - C Earths
 - D Intermediate couplings
 - E Instrument panel and indicators
 - F Exterior lights
 - G Interior lights
 - H Manual electric controls
 - I Switches
 - J Relays
 - K Sensors and sender units
 - L Electromagnets and solenoid valves
 - M Intermittent and timed electronic devices,..
 - N Electric motors and actuators
 - O Resistances and dimmers
 - P Various consumers
 - Q Safety devices