| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| S162 | Fuse 1 (30), in battery fuse holder |
| S163 | Fuse 2 (30), in battery fuse holder |
| T1b | Single connector |
| T2n | 2-pin connector, in engine compartment |
| T2u | 2-pin connector |
| T14 | 14-pin connector, in engine compartment |
| T73a | 73-pin connector |
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| 507 | Threaded connection (30), on battery fuse holder |
| * | Only models with onboard supply control unit BFM |
| *2 | Only for engines with 2-valve cylinder head |
| *3 | Only for engines with 4-valve cylinder head |
| *4 | Only models with onboard supply control unit BCM |
| D | Ignition/starter switch |
| J59 | X-contact relief relay |
| J519 | Onboard supply control unit |
| T6t | 6-pin connector |
| T64a | 64-pin connector |
| TV2 | Terminal 30 wiring junction |
| 367 | Earth connection 2, in main wiring harness |
| B272 | Positive connection (30), in main wiring harness |
| B273 | Positive connection (15), in main wiring harness |
| B299 | Positive connection 3 (30), in main wiring harness |
| B499 | Connection 2 (53c), in interior wiring harness |
| B539 | Connection 30, in main wiring harness |
| J519 | Onboard supply control unit |
| R | Radio |
| R17 | Rear right bass loudspeaker |
| R22 | Front right treble loudspeaker |
| R23 | Front right bass loudspeaker |
| T2g | 2-pin connector |
| T2J | 2-pin connector |
| T2k | 2-pin connector, in front passenger door |
| T2t | 2-pin connector |
| T6b | 6-pin connector, in front passenger door |
| T8i | 8-pin connector |
| T8j | 8-pin connector |
| T20c | 20-pin connector, in front passenger door |
| B103 | Connection (positive, front right speaker), in main wiring harness |
| B104 | Connection (negative, front right speaker), in main wiring harness |
| B317 | Positive connection 3 (30a) in main wiring harness |
| * | Only models with manual window regulators |
| *2 | Only for models with no central locking and with no window regulator |
| *3 | Only models with no electrically adjustable exterior mirrors |
| J519 | Onboard supply control unit |
| R | Radio |
| R20 | Front left treble loudspeaker |
| R21 | Front left bass loudspeaker |
| T2i | 2-pin connector |
| T2m | 2-pin connector, in front passenger door |
| T2s | 2-pin connector |
| T6d | 6-pin connector, in front passenger door |
| T8i | 8-pin connector |
| T8j | 8-pin connector |
| T20b | 20-pin connector, in front passenger door |
| 396 | Earth connection 31, in main wiring harness |
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| B101 | Connection (positive, front left speaker), in main wiring harness |
| B102 | Connection (negative, front left speaker), in main wiring harness |
| B518 | Connection (86s), in main wiring harness |
| * | Only models with manual window regulators |
| *2 | Only for models with no central locking and with no window regulator |
| *3 | Only models with no electrically adjustable exterior mirrors |
| *4 | Only models with onboard supply control unit BFM |
| *5 | Only models with onboard supply control unit BCM |
