| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| S162 | Fuse 1 (30) in fuse holder on battery |
| S163 | Fuse 2 (30) in fuse holder on battery |
| S268 | Fuse 10 (30) in fuse holder on battery |
| T1a | Single pin connector, on starter |
| T2x | 2-pin connector, near dual tone horn |
| T2y | 2-pin connector, on alternator |
| T6q | 6-connector, blue, in left engine compartment |
| T11d | 11-pin connector, white, in left engine compartment |
| T12a | 12-pin connector, white, in left engine compartment |
| T18a | 18-pin connector, on onboard supply control unit |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| 1 | Earth strap, battery - body |
| 507 | Screw connection (30), on fuse holder on battery |
| 621 | Earth point 1, seat control unit |
| D | Ignition/starter switch |
| E19 | Parking light switch |
| J519 | Onboard supply control unit |
| SB10 | Fuse 10 on fuse holder B |
| T8a | 8-connector, on ignition/starter switch |
| T11b | 11-pin connector, red, in left engine compartment |
| T18a | 18-pin connector, on onboard supply control unit |
| T41a | 41-pin connector, on turn signal switch |
| B111 | Positive connection 1 (30a), in interior wiring harness |
| B491 | Positive connection (75), in interior wiring harness |
| B500 | Connection (86s), in interior wiring harness |
| B503 | Positive connection 7 (30a), in interior wiring harness |
| E4 | Headlight dipper/flasher switch |
| F | Brake light switch |
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| SB26 | Fuse 26 on fuse holder B |
| SB29 | Fuse 29 on fuse holder B |
| T3c | 3-pin connector, grey, in left engine compartment |
| T4c | 4-pin connector, on brake light switch |
| T16a | 16-pin connector, on onboard supply control unit |
| T16b | 16-pin connector, near relay station, self-diagnosis connection |
| T18a | 18-pin connector, on onboard supply control unit |
| T41a | 41-pin connector, on turn signal switch |
| TV3 | Terminal 30a wiring junction |
| 279 | Earth connection 5, in interior wiring harness |
| 284 | Earth connection 6, in interior wiring harness |
| 285 | Earth connection 7, in interior wiring harness |
| 606 | Earth point, under the centre console near selector lever |
| B150 | Positive connection 2 (30a), in interior wiring harness |
| B159 | Connection (diagnosis), in interior wiring harness |
| B231 | Positive connection 5 (30a), in interior wiring harness |
| F125 | Multifunction switch |
| J217 | Automatic gearbox control unit |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| S271 | Fuse 13 (30) in fuse holder on battery |
| T8o | 8-pin connector, near battery |
| T10f | 10-pin connector, on multifunction switch |
| T68a | 52-pin connector, on automatic gearbox control unit |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| 13 | Earth point, on right in engine compartment |
| 14 | Earth point, on gearbox |
| 131 | Earth connection 2, in engine compartment wiring harness |
| U2 | Connection 1 (15), in automatic gearbox wiring harness |
| G38 | Gearbox speed sender |
| J217 | Automatic gearbox control unit |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| T2ch | 2-pin connector, on gearbox speed sender |
| T6q | 6-connector, blue, in left engine compartment |
| T8o | 8-pin connector, near battery |
| T11d | 11-pin connector, white, in left engine compartment |
| T16a | 16-pin connector, on onboard supply control unit |
| T68a | 52-pin connector, on automatic gearbox control unit |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| B229 | Connection (high bus), in interior wiring harness |
| B230 | Connection (low bus), in interior wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| D166 | Connection (K-diagnosis wiring), in engine compartment wiring harness |
| J285 | Control unit in dash panel insert |
| J519 | Onboard supply control unit |
| J687 | Control unit 4 MV |
| K | Dash panel insert |
| SB15 | Fuse 15 on fuse holder B |
| SB45 | Fuse 45 on fuse holder B |
| T6p | 6-connector, yellow, in left engine compartment |
| T6q | 6-connector, blue, in left engine compartment |
| T32a | 32-pin connector, on dash panel insert |
| T81a | 81-pin connector, Diesel direct injection system control unit/4LV injection system control unit |
| Y6 | Selector lever position display |
| B163 | Positive connection 1 (15), in interior wiring harness |