How to Find Wiring Diagrams

NOTE: Wiring Diagrams are classified by OE as belonging to one of three categories.


These Three OE Categories Are::

1 - Standard Equipment
2 - Engine Specific
3 - System Specific and Optional Equipment

ALLDATA Presents These Three Categories As Follows:

Standard Equipment
This category includes equipment such as Instrument Cluster and Gauges, Headlights/Tail Lights/Turn Signals, Rear Window Defroster, Wipers and Washers, etc..

Standard equipment is found on all vehicles regardless of which engine or optional equipment is installed.

The Standard Equipment diagrams can be found at Power and Ground Distribution diagrams. These diagrams have a hyperlinked Wiring Diagram Index that lists all of the components shown within them. Click on the link for the component in question, and the link will take you to the first appropriate diagram with that component's circuit.

Engine Specific
This category includes components and systems circuits such as Starting and Charging Systems, Engine Controls, Ignition System, Fuel Injection System, etc., which are unique to a specific engine.

The Engine Specific diagrams can be found at Powertrain Management diagrams. These diagrams have a hyperlinked Wiring Diagram Index that lists all of the components shown within them. Click on the link for the component in question, and the link will take you to the first appropriate diagram with that component's circuit.


System Specific and Optional Equipment
This category includes equipment such as Air Bag Systems, Anti-lock Brake System, Heated Seats, HVAC System, Comfort System, etc.. and provides circuit details for those systems and components.

The System Specific and Optional Equipment diagrams can be found at the specific ALLDATA System/SubSystem that they are most closely related to. As a rule, these diagrams are not as numerous as those for the Standard Equipment and Engine Specific categories and do not have an index. The image legends on each of these diagrams will indicate which components they show circuits for.