| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J339 | X contact relief relay 2 |
| J519 | Onboard supply control unit |
| J695 | Starter motor relay 2 |
| S162 | Fuse 1 (30), in battery fuse holder |
| S163 | Fuse 2 (30), in battery fuse holder |
| T1j | Single connector |
| T2ak | 2-pin connector, in engine compartment |
| T2ar | 2-pin connector |
| T6an | 6-pin connector |
| T10h | 10-pin connector |
| T14a | 14-pin connector, in engine compartment |
| T73a | 73-pin connector |
| 1 | Earth strap, battery - body |
| 49 | Earth point, near ..., near battery |
| 507 | Threaded connection (30), on battery fuse holder |
| B467 | Connection 3, in main wiring harness |
| * | Only for engines with 2-valve cylinder head |
| *2 | Only for engines with 4-valve cylinder head |
| *3 | Only models with onboard supply control unit BFM |
| *4 | Only models with onboard supply control unit BCM |
| *5 | According to equipment |
| E1 | Light switch |
| J59 | X-contact relief relay |
| J404 | Terminal 15 relief relay |
| J519 | Onboard supply control unit |
| T6d | 6-pin connector |
| T9s | 9-pin connector |
| T17a | 17-pin connector |
| T73a | 73-pin connector |
| 366 | Earth connection 1, in main wiring harness |
| 606 | Earth point, under the centre console near gear stick |
| B298 | Positive connection 2 (30), in main wiring harness |
| B299 | Positive connection 3 (30), in main wiring harness |
| B300 | Positive connection 4 (30), in main wiring harness |
| B316 | Positive connection 2 (30a) in main wiring harness |
| * | Only models with onboard supply control unit BFM |
| *2 | Only models with automated manual gearbox |
| *3 | Only models with onboard supply control unit BCM |
| D | Ignition/starter switch |
| J519 | Onboard supply control unit |
| SA2 | Fuse 2 in fuse holder A |
| T7a | 7-pin connector |
| T73a | 73-pin connector |
| B346 | Connection 1 (75), in main wiring harness |
| B518 | Connection (86s), in main wiring harness |
| B555 | Positive connection 2 (50), in main wiring harness |
| B626 | Positive connection 2 (15), in main wiring harness |
| * | Only models with onboard supply control unit BFM |
| *2 | Only models with onboard supply control unit BCM |
| *3 | Only models with automated manual gearbox |
| *4 | According to equipment |
| J519 | Onboard supply control unit |
| J587 | Selector lever sensors control unit |
| J650 | Multimedia system control unit |
| RX1 | Radio/RNS |
| T10g | 10-pin connector |
| T12a | 12-pin connector |
| T16a | 16-pin connector |
| T18a | 18-pin connector |
| T73b | 73-pin connector |
| T73c | 73-pin connector |
| B383 | Connection 1 (powertrain CAN bus, high), in main wiring harness |
| B390 | Connection 1 (powertrain CAN bus, low), in main wiring harness |
| B420 | Connection 6 (infotainment CAN bus, high), in main wiring harness |
| B421 | Connection 1 (infotainment CAN bus, low), in main wiring harness |
| * | Only models with radio navigation system RNS 315 |
| *2 | Diagnostic connection |
| *3 | Only models with onboard supply control unit BFM |
| *4 | Only models with onboard supply control unit BCM |
| *5 | Only for engines with 2-valve cylinder head |
| *6 | Only for engines with 4-valve cylinder head |
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