Wiring Diagram (Circuit Diagram)
A wiring diagram shows how electrical components, wires, connectors, fuses and grounds are connected in a vehicle.
What is Wiring Diagram (Circuit Diagram)?
It lists wire colours, pin numbers and connector locations. Manufacturers provide them in service information. They are essential for tracing electrical faults. Many diagrams also show ground point locations, which are frequent causes of electrical faults. Online service portals from manufacturers often include interactive diagrams.
How it works
Symbols and lines represent parts and wires so a technician can follow the current path.
Why it matters for your car
Diagrams differ between model years and equipment levels. Use the diagram for the exact vehicle.
Other terms
- Airbag Replacement After Deployment
- Body Roll
- Brake Fluid DOT Ratings
- CAN Bus
- Caravan Mover (Motor Mover)
- Clutch Kit
- Cylinder Head Bolt
- Dual-Zone Climate Control
- Exhaust Flex Pipe
- Forced DPF Regeneration (Service Regeneration)
- Glovebox
- GPS Tracker (Vehicle Tracking)
- Head Gasket
- High-voltage Cable (Orange Cable)
- Roundabout
- Technical Service Bulletin (TSB)
- Tyre Puncture
- Valet Mode
- Warning Light Colours (Red, Amber, Green)
- Wastegate