| D | Ignition/starter switch |
| E20 | Switches and instruments, lighting control |
| E159 | Fresh air/air recirculating flap switch |
| K114 | Fresh air/air recirculation warning lamp |
| L16 | Fresh air controls light bulb |
| SB26 | Fuse -26- in fuse box/relay plate |
| T8g | 8-pin connector, behind dash panel, centre |
| T10u | 10-pin connector, behind dash panel, centre |
| V2 | Fresh air blower |
| V154 | Fresh/recirculating air flap control motor |
| 606 | Earth point, under the centre console, near gear stick |
| 162 | Earth connection, in blower motor wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| B145 | Positive (+) connection (58b), in interior wiring harness |
| B235 | Connection -1- (15a), in interior wiring harness |
| L66 | Connection, in heater blower wiring harness |
| E9 | Fresh air blower switch |
| E35 | Air conditioner switch |
| J59 | X contact relief relay |
| K84 | Air conditioning system warning lamp |
| N24 | Fresh air blower with overheating fuse series resistor |
| SB49 | Fuse -49- in relay plate fuse box |
| T4n | 4-pin connector, black, on fresh air blower series resistor |
| T6f | 6-pin connector, behind dash panel |
| T8g | 8-pin connector, behind dash panel |
| T10u | 10-pin connector, behind dash panel |
| A34 | Connection (75x), in dash panel wiring harness |
| L45 | Connection, in air conditioner controls wiring harness |
| L66 | Connection, in heater blower wiring harness |
| G346 | Compressor switch-off temperature sender |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit, on left in front of engine compartment |
| N25 | Air conditioner magnetic coupling |
| T3a | 3-pin connector, black, on left in front of engine compartment |
| T5 | 5-pin connector, near starter |
| T4k | 4-pin connector, black |
| T10g | 10-pin connector, brown, coupling station below relay carrier |
| T10s | 10-pin connector, green, coupling station below relay carrier |
| T14c | 14-pin connector, black |
| T80 | 80-pin connector, on engine control unit |
| V35 | Radiator fan |
| 10 | Earth point, in plenum chamber |
| 201 | Earth connection -5-, in engine compartment wiring harness |
| D52 | Positive connection (15a), in engine compartment wiring harness |
| D135 | Connection (1st fan speed), in engine - headlight wiring harness |
| A | Battery |
| F18 | Radiator fan thermo-switch |
| G65 | High pressure sender |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit, in engine compartment, front left |
| J361 | Simos control unit |
| SA4 | Fuse -4- (30), in battery fuse box |
| SA7 | Fuse -7- (30), in battery fuse box |
| SA8 | Fuse -8- (30) in battery fuse box |
| T3c | 3-pin connector, black, on high pressure sender |
| T4g | 4-pin connector, black, on battery fuse box |
| T4k | 4-pin connector, black |
| T14c | 14-pin connector, black |
| T80 | 80-pin connector, on engine control unit |
| T121 | 121-pin connector, on engine control unit |
| D61 | Connection (air conditioner), in engine compartment wiring harness |
| D135 | Connection -1- (15a), in interior wiring harness |
| K20 | Positive (+) connection -1- (30), in radiator fan wiring harness |
