Operation CHARM: Car repair manuals for everyone.
Hosted by mcallihan.com

How to Read Wiring Diagrams



CONNECTOR SYMBOLS

Connector Symbols:




All connector symbols in wiring diagrams are shown from the terminal side.




Male and female terminals

Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams.

SWITCH POSITIONS

Switch Positions:




Wiring diagram switches are shown with the vehicle in the following condition.
- Ignition switch "OFF".
- Doors, hood and trunk lid/back door closed.
- Pedals are not depressed and parking brake is released.

MULTIPLE SWITCH




The continuity of the multiple switch is identified in the switch chart in wiring diagrams.

SUPER MULTIPLE JUNCTION (SMJ)

Super Multiple Junction (SMJ):




The "S.M.J." indicated in wiring diagrams is shown in a simplified form.

WIRING DIAGRAM COMPONENTS

Wiring Diagram:






STANDARDIZED RELAY

Normal Open, Normal Closed And Mixed Type Relays:




Relays can mainly be divided into three types:normal open, normal closed and mixed type relays.

Type Of Standardized Relays:




Standardized Relay: