| Baro sensor ground | 0.5 mm² | Barometric Pressure Sensor 1 | S214 T |
| Coolant sensor ground | 0.5 mm² | Coolant Temperature Sensor (2.7e) 1 | S214 T |
| Coolant sensor ground | 0.5 mm² | Coolant Temperature Sensor (2.5i) NTC | S701 R |
| Coolant switch ground | 0.5 mm² | Coolant Temperature Switch (2.7e) 1 | S217 T |
| Cyl ID shield | 0.75 mm² | Shield: Cylinder Identification (upper) 1 | Cylinder ID shield connector 1 |
| Cyl ID shield | 0.75 mm² | Cylinder ID shield connector 1 | Shield: Cylinder Identification (lower) 1 |
| Cyl ID shield | 0.75 mm² | Shield: Cylinder Identification (lower) 2 | Shield junction (2.5i) T |
| Diag ground | 1.5 mm² | Diagnostic Connector (2.7e) 1 | G103 (2.7e: left side of engine block above starter) GND |
| Diag ground | 1.5 mm² | Diagnostic Connector (2.5i) 19 | S111 T |
| Diag shields | 0.75 mm² | Diagnostic Connector (2.7e) 1 | Diag shield junction (2.7e) L |
| Diag shields | 0.75 mm² | Diagnostic Connector (2.5i) 19 | Diag shield junction (2.5i) L |
| ISC ground | 1.5 mm² | Idle Speed Control Unit (2.7e) 4 | G103 (2.7e: left side of engine block above starter) GND |
| Main relay ground | 0.75 mm² | Main Relay (2.7e) 85 | S217 L |
| Main relay ground | 0.75 mm² | Main Relay (2.5i) 85 | G103 (2.5i: on RH shock tower) GND |
| Motronic 10 | 0.75 mm² | Motronic Control Unit (2.7e) 10 | G103 (2.7e: left side of engine block above starter) GND |
| Motronic 14 | 2.5 mm² | Motronic Control Unit (2.5i) 14 | G103 (2.5i: on RH shock tower) GND |
| Motronic 16 | 2.5 mm² | Motronic Control Unit (2.7e) 16 | S217 R |
| Motronic 17 | 2.5 mm² | Motronic Control Unit (2.7e) 17 | S217 T |
| Motronic 19 | 2.5 mm² | Motronic Control Unit (2.7e) 19 | G103 (2.7e: left side of engine block above starter) GND |
| Motronic 19 | 1.5 mm² | Motronic Control Unit (2.5i) 19 | G103 (2.5i: on RH shock tower) GND |
| Motronic 2 | 2.5 mm² | Motronic Control Unit (2.5i) 2 | G103 (2.5i: on RH shock tower) GND |
| Motronic 24 | 1.5 mm² | Motronic Control Unit (2.5i) 24 | G103 (2.5i: on RH shock tower) GND |
| Motronic 5 | 1.5 mm² | Motronic Control Unit (pin 5) 5 | S214 R |
| O2 ground | 0.75 mm² | Oxygen Sensor (2.7e) 1 | C141 2 |
| O2 ground | 1.0 mm² | C141 2 | C140 2 |
| O2 ground | 0.75 mm² | C140 2 | G103 (2.7e: left side of engine block above starter) GND |
| O2 ground | 1.0 mm² | S111 R | O2 sensor connector 1 |
| O2 ground | 0.75 mm² | O2 sensor connector 1 | Oxygen Sensor (2.5i) 1 |
| O2 shield | 0.75 mm² | Shield: Oxygen Sensor 1 | Shield junction (2.5i) T |
| Ref sensor shield | 0.75 mm² | Motronic Control Unit (pin 5) 5 | Shield: Reference Point Sensor (upper) 1 |
| Ref sensor shield | 0.75 mm² | Shield: Reference Point Sensor (upper) 2 | Shield: Reference Point Sensor (lower) 1 |
| S111 ground | 4.0 mm² | S111 L | G103 (2.5i: on RH shock tower) GND |
| S214 ground | 2.5 mm² | S214 B | G103 (2.7e: left side of engine block above starter) GND |
| S217 ground | 2.5 mm² | S217 B | G103 (2.7e: left side of engine block above starter) GND |
| S701 ground | 1.5 mm² | S701 B | G103 (2.5i: on RH shock tower) GND |
| Shield | 0.75 mm² | Diag shield junction (2.7e) T | Shield: Diagnostic Connector pin 13 1 |
| Shield | 0.75 mm² | Diag shield junction (2.7e) R | Shield: Motronic Control Unit (2.7e) 1 |
| Shield | 0.75 mm² | Diag shield junction (2.7e) B | Shield: Tachometer 1 |
| Shield | 0.75 mm² | Diag shield junction (2.5i) T | Shield: Diagnostic Connector pin 1 1 |
| Shield | 0.75 mm² | Diag shield junction (2.5i) R | Shield: Motronic Control Unit (2.5i) 1 |
| Shield | 0.75 mm² | Diag shield junction (2.5i) B | Shield: Ignition Coil 1 |
| Shields to G103 | 0.75 mm² | Shield junction (2.5i) R | G103 (2.5i: on RH shock tower) GND |
| Speed sensor shield | 0.75 mm² | Shield: Engine Speed Sensor (upper) 1 | Engine speed shield connector 3 |
| Speed sensor shield | 0.75 mm² | Engine speed shield connector 3 | Shield: Engine Speed Sensor (lower) 1 |
| Speed sensor shield | 0.75 mm² | Shield: Engine Speed Sensor (lower) 2 | Shield junction (2.5i) L |
| Throttle switch ground | 0.75 mm² | Throttle Switch (2.7e) 1 | S214 L |
| Throttle switch ground | 0.5 mm² | Throttle Switch (2.5i) 1 | S701 L |