Mass points
These symbols indicate the ground points of the electrical wiring.
Electrical diagrams/connector diagrams
These diagrams show the circuits of each system from the power supply to the ground point. The power supply side is at the top of the diagram, and the ground side is at the bottom. The wiring diagrams show the electrical circuits with the ignition off.
Below are examples of connector designations on electrical diagrams.
Wire designation
| Wiring harness name | Designation | |
| Front Wiring Harness | (F) |  |
| Front Wiring Harness #2 | (F2) | |
| Engine Wiring Harness | (E) |  |
| Instrument cluster wiring harness | (D) |  |
| Rear Wiring Harness | (R) |  |
| Rear Wiring Harness #2 | (R2) | - |
| Rear Wiring Harness #3 | (R3) | - |
| Rear Wiring Harness #4 | (R4) | - |
| Rear Wiring Harness #5 | (R5) | - |
| Instrument cluster wiring harness | (1) | - |
| Emission Control System Wiring Harness | (EM) | - |
| Emission Control System Wiring Harness #2 | (EM2) | - |
| Emission Control System Wiring Harness #3 | (EM3) | - |
| Door Wiring Harness #1 | (DR1) | - |
| Door Wiring Harness #2 | (DR2) | - |
| Door Wiring Harness #3 | (DR3) | - |
| Door Wiring Harness #4 | (DR4) | - |
| Floor wiring harness | (FR) | - |
| Interior Lighting Wiring Harness | (IN) | - |
| Interior Lighting Wiring Harness #2 | (IN₂) | - |
| Air conditioning system wiring harness | (AC) | - |
| Fuel injection system wiring harness | (INJ) | - |
| Parking brake wiring harness | (NV) | - |
Wire color designation
| Color | Code |
| Black | B |
| Blue | L |
| Brown | BR |
| Dark blue | DL |
| Dark green | GY |
| Green | G |
| Light blue | LB |
| Light green | LG |
| Orange | O |
| Pink | R |
| Red | R |
| Sky blue | SB |
| Beige | T |
| Violet | V |
| White | W |
| Yellow | Y |