| A | Battery |
| B | Starter |
| F | Brake light switch |
| J... | Engine control units |
| J104 | ABS control unit, on left in engine compartment |
| J217 | Automatic gearbox control unit |
| M9 | Left brake light bulb |
| M10 | Right brake light bulb |
| SA2 | Fuse 2 (30), on battery fuse holder |
| SA5 | Fuse 2 (30), on battery fuse holder |
| SA6 | Fuse 6 (30), on battery fuse holder |
| SB15 | Fuse 15 in relay plate fuse holder |
| T4g | 4-pin connector, black, on battery fuse holder |
| T10 | 10-pin connector, white, coupling station under relay carrier |
| T25 | 25-pin connector, black, on ABS control unit |
| 1 | Earth strap, battery - body |
| 500 | Screw connection 1 (30), on relay plat |
| 502 | Threaded connection 1 (30a) on relay plate |
| A32 | Positive connection (30), in dash panel wiring harness |
| B111 | Positive connection 1 (30a), in interior wiring harness |
| B131 | Connection (54), in interior wiring harness |
| D73 | Positive connection (54), in engine compartment wiring harness |
| * | Depends on equipment ⇒ Engine current flow diagram |
| ** | Only models with automatic gearbox |
| G45 | Front right speed sensor |
| G47 | Front left speed sensor |
| J104 | ABS control unit, on left in engine compartment |
| N99 | Front right ABS inlet valve |
| N100 | Front right ABS outlet valve |
| N101 | Front left ABS inlet valve |
| N102 | Front left ABS outlet valve |
| N133 | Rear right ABS inlet valve |
| T2f | 2-pin connector, black, on ABS control unit |
| T25 | 25-pin connector, black, on ABS control unit |
| V64 | ABS hydraulic pump, on ABS control unit |
| 12 | Earth point, on left in engine compartment |
| 132 | Earth connection 3, in engine compartment wiring harness |
| * | Only with engine code ANY |
| G44 | Rear right speed sensor (00287) |
| G46 | Rear left speed sensor (00290) |
| J... | Engine control units |
| J104 | ABS control unit, on left in engine compartment |
| J217 | Automatic gearbox control unit |
| J514 | Electronic manual gearbox control unit |
| N134 | Rear left ABS inlet valve |
| N135 | Rear right ABS outlet valve |
| N136 | Rear left ABS outlet valve |
| T10c | 10-pin connector, blue, coupling station under relay carrier |
| T16 | 16-pin connector, self-diagnosis connection |
| T25 | 25-pin connector, black, on ABS control unit |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| J3 | Connection 1, in ABS wiring harness |
| J5 | Connection 2, in ABS wiring harness |
| J7 | Connection 3, in ABS wiring harness |
| J8 | Connection 4, in ABS wiring harness |
| * | Only models with engine code ANY (Lupo 3L) |
| D | Ignition/starter switch |
| J59 | X-contact relief relay |
| J104 | ABS control unit, on left in engine compartment |
| J285 | Control unit with display in dash panel insert |
| K47 | ABS warning lamp |
| SB8 | Fuse 8 on relay plate fuse holder |
| SB9 | Fuse 9 on relay plate fuse holder |
| T10a | 10-pin connector, green, coupling station under relay carrier¹) |
| T25 | 25-pin connector, black, on ABS control unit |
| T32 | 32-pin connector, blue, on dash panel insert |
| B135 | Connection 1 (15a), in interior wiring harness |
| B138 | Positive connection (X), in interior wiring harness |
| B173 | Positive connection 2 (X), in interior wiring harness |
| B235 | Positive connection 4 (15a), in interior wiring harness |
| * | Applicable to May 1999 |
| ** | Valid from May 1999 |
| ¹) | Connections, see section "Fitting locations" |