| Component code | Name | Assembly reference |
|---|
| B1 | Engine compartment junction unit | 5505A |
| B2 | Junction unit under dashboard | 5505A |
| B38 | Additional heater fuse | - |
| B99 | Maxifuse box on battery | 5530B |
| C10 | Front left earth | - |
| C16 | Air conditioning earth | - |
| D8 | Front coupling / air conditioner - with heating | - |
| D8 | Front/air conditioning - heater coupling | - |
| H1 | Ignition switch | 5520A |
| I95 | Additional heater safety switch | - |
| J36 | Additional heater relay | - |
| J37 | Additional heater relay - 2 | - |
| J37 | Additional heater relay -2 | - |
| K79 | Air temperature sensor (additional heater)( | - |
| K79 | Air temperature sensor (additional heater)() | - |
| M70 | Climate control system control unit | 5040D |
| M74 | Additional heater remote control receiver | - |
| M75 | Additional heater control unit | - |
| M75 | Additional heater control unit | 5040D |
| N85 | Passenger compartment ventilation fan | 5040C |
| O25 | Additional heater resistor | - |
