| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| T1ag | Single connector |
| T2bo | 2-pin connector |
| T2v | 2-pin connector, near battery |
| T16c | 16-pin connector, next to relay plate |
| TV2 | Terminal 30 wiring junction |
| 1 | Earth strap, battery - body |
| 49 | Earth point, near ..., near battery |
| A40 | Positive connection 1 (30), in dash panel wiring harness |
| D26 | Positive connection (B+), in alternator wiring harness |
| P1 | Positive connection (30), in battery fuse holder |
| E165 | Rear lid release switch |
| F111 | Rear lid contact switch |
| L104 | Remote release switch illumination bulb |
| T1d | Single connector, on rear lid release motor |
| T1e | Single connector, on rear lid release motor |
| T2u | 2-pin connector |
| T2w | 2-pin connector, behind rear left side trim, near wheel arch |
| T6d | 6-pin connector |
| T16d | 16-pin connector, next to relay plate |
| V139 | Rear lid release motor |
| 44 | Earth point, lower part of left A-pillar |
| 50 | Earth point, on left in luggage compartment |
| 52 | Earth point, on left in rear lid |
| 98 | Earth connection, in rear lid wiring harness |
| 199 | Earth connection 3, in dash panel wiring harness |
| 213 | Earth connection, in dash panel wiring harness |
| A37 | Connection (58a), in dash panel wiring harness |
| A38 | Positive connection 2 (15a) in dash panel wiring harness |
| * | Variant |
| *2 | Only models with no electrically adjustable exterior mirrors |
| *3 | Only models with rear lid release switch |
| T2n | 2-pin connector, on left B-pillar |
| T2q | 2-pin connector, on right B-pillar |
| T2r | 2-pin connector, behind rear left side trim, near wheel arch |
| T2t | 2-pin connector |
| T3h | 3-pin connector |
| T3i | 3-pin connector |
| T16d | 16-pin connector, next to relay plate |
| V120 | Rear lid lock motor |
| V307 | Rear left power latching motor |
| V308 | Rear right power latching motor |
| W3 | Connection in rear wiring harness |
| W16 | Connection (contact switch in rear lid/ATA/CL lock cylinder), in rear wiring harness |
| * | Squareback |
| E22 | Intermittent wiper switch |
| F338 | Driver door power latching system contact switch |
| J1 | Turn signal relay |
| J330 | Main beam relay |
| T4c | 4-pin connector |
| T6c | 6-pin connector |
| T6l | 6-pin connector, in driver door |
| T9a | 9-pin connector |
| T9n | 9-pin connector |
| T16a | 16-pin connector |
| V302 | Driver door power latching motor |
| 44 | Earth point, lower part of left A-pillar |
| 81 | Earth connection 1, in dash panel wiring harness |
| 135 | Earth connection 2, in dash panel wiring harness |
| 205 | Earth connection, in driver door wiring harness |
| * | From May 2007 |
| *2 | Diagnostic connection |
| *3 | From March 2010 |
| Designation of connector: | | A - | ABS control unit -J104- | | B - | 31-pin connector, on ABS control unit -T31a- | | Airbag control unit -J234- | | | | | Designation of connector: | | A - | Airbag control unit -J234- | | B - | 75-pin connector, on ABS control unit -T75a- | | Control unit with display in dash panel insert -J285- | | | | | Designation of connector: | | A - | Control unit with display in dash panel insert -J285- | | B - | 32-pin connector, on control unit with display in dash panel insert -T32a- | | 8 - | Coolant temperature sender | | 20 - | Immobilizer control unit | | 29 - | Brake system monitoring | | B - | 32-pin connector, on control unit with display in dash panel insert -T32a- | Note | for models with 1.0 l Flex engine, 1.0 l and 1.4 l petrol engines only, from March 2008 | | 4 - | Terminal CAN-Bus high | | 14 - | Brake system monitoring | | 15 - | Immobilizer control unit | | 16 - | Immobilizer control unit | | Control unit with display in dash panel insert -J285- | Note | for models Generation IV with dash panel Generation III only | | | | | Designation of connector: | | A - | Control unit with display in dash panel insert -J285- | | B - | 32-pin connector, on control unit in dash panel insert -T32a- | | 8 - | Coolant temperature sender | | 16 - | Immobilizer control unit | | 22 - | Coolant shortage indicator sender | | 29 - | Brake system monitoring | | Convenience system central control unit -J393- | | | | | Designation of connector: | | A - | Convenience system central control unit -J393- | | B - | 12-pin connector, on convenience system central control unit -T12c- | | C - | 23-pin connector, on convenience system central control unit -T23a- | | D - | 12-pin connector, on convenience system central control unit -T12b- | | Engine control unit -J623- | | | | | Designation of connector: | | A - | Engine control unit -J623- | | B/C - | 80-pin connector, on engine control unit -T80a- | | Air conditioning system control unit -J301- | | | | | Designation of connector: | | A - | Air conditioning system control unit -J301- | | B - | 5-pin connector, on air conditioning system control unit -T5d- | | C - | 7-pin connector, on heater control unit -T7d- | | Immobilizer control unit -J362- | | | | | Designation of connector: | | A - | Immobilizer control unit -J362- | | B - | 8-pin connector, on immobilizer control unit -T8g- | | C - | 2-pin connector, on immobilizer control unit -T2bp- | | Alarm system control unit -J85- | | | | | Designation of connector: | | A - | Alarm system control unit -J85- | | B - | 22-pin connector, on alarm system control unit -T22a- | | | | | | | | | |