How to Read Wiring Diagrams

How to Read Wiring Diagram

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.


WIRING DIAGRAMS - EXAMPLE

Wiring Diagram - Example:

Sample/Wiring Diagram Optional Splice:

WIRING DIAGRAM LEGEND

How To Read Wiring Diagrams - Description:

How To Read Wiring Diagrams - Description (Part 2 Of 2):

SPLICE LOCATION

Splice Location:

^ "GM25", "M130" etc., which are shown in the wiring diagram, refer to wiring harness splice points.
^ Wiring harness splice points are subject to change without prior notice.


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 "SMJ" indicated in wiring diagrams is shown in a simplified form.