Wiring Diagram VW POLO 2007 - Battery - Starter - Alternator - Voltage regulator - Onboard power supply control unit
| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| J519 | Onboard power supply control unit |
| J687 | 4MV (injection system) control unit |
| S162 | Fuse -1- (30), in battery fuse holder |
| S163 | Fuse -2- (30), in battery fuse holder |
| S268 | Fuse -10- (30), in battery fuse holder |
| T1a | Single connector, on starter |
| T2x | 2-pin connector, near dual tone horn |
| T2y | 2-pin connector, on alternator |
| T6q | 6-pin connector, blue, in engine compartment, left |
| T11d | 11-pin connector, white, in engine compartment, left |
| T12a | 12-pin connector, white, in engine compartment, left |
| T18a | 18-pin connector, on onboard power supply control unit |
| T81a | 81-pin connector, on 4MV (injection system) control unit |
| 1 | Earth strap, battery body |
| 507 | Screw connection (30), on battery fuse holder |
| 621 | Earth point, onboard power supply battery |
Wiring Diagram VW POLO 2007 - Ignition/starter switch - Onboard power supply control unit
| D | Ignition/starter switch |
| E19 | Parking light switch |
| J519 | Onboard power supply control unit |
| SB10 | Fuse -10- on fuse holder |
| T8a | 8-pin connector, on ignition/starter switch |
| T18a | 18-pin connector, on onboard power supply control unit |
| T41a | 41-pin connector, on headlight dipper/flasher switch |
| B111 | Positive connection -1- (30a), in interior wiring harness |
| B165 | Positive connection -2- (15), in interior wiring harness |
| B491 | Positive connection (75), in interior wiring harness |
| B492 | Positive connection -3- (15), in interior wiring harness |
| B500 | Connection (86s), in interior wiring harness |
| B503 | Positive connection -7- (30a), in interior wiring harness |
Wiring Diagram VW POLO 2007 - Onboard power supply control unit - Data bus diagnostic interface - Terminal 30a wiring junction
| E4 | Headlight dipper/flasher switch |
| F | Brake light switch |
| J519 | Onboard power supply control unit |
| J533 | Data bus diagnostic interface |
| SB26 | Fuse -26- on fuse holder |
| SB29 | Fuse -29- on fuse holder |
| T3c | 3-pin connector, (grey) in engine compartment, left |
| T4c | 4-pin connector, on cruise control system brake pedal switch (diesel direct injection system) |
| T16a | 16-pin connector, on onboard power supply control unit |
| T16b | 16-pin connector, near relay station |
| T18a | 18-pin connector, on onboard power supply control unit |
| T41a | 41-pin connector, on headlight dipper/flasher 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 gear stick |
| 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 |
Wiring Diagram VW POLO 2007 - Cruise control system switch - Cruise control system (CCS) button (Set) - Diode - in wiring harness - Onboard power supply control unit
| E45 | Cruise control system switch |
| E227 | Cruise control system (CCS) button (Set) |
| J29 | Diode, in wiring harness |
| J... | Engine control units |
| J519 | Onboard power supply control unit |
| SB4 | Fuse -4- on fuse box |
| T1m | Single connector, on diode, in wiring harness |
| T1n | Single connector, on diode, in wiring harness |
| T6e | 6-pin connector, on onboard power supply control unit |
| T11d | 11-pin connector, (white) in engine compartment, left |
| T41a | 41-pin connector, on turn signal switch |
| A130 | Connection (cruise control system), in dash panel wiring harness |
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