GM Circuit Numbers

[Shannen Durphey]

David C. Allen wrote:
> 
> Anyone have information on the coding that GM uses in it wiring diagrams.
> 
> Example ckt 450 System Gnd
>                ckt 340 Power Feed
>                ckt 440 Power Feed
>                ckt 412 Oxygen Sensor
> 
> Thanks
> 
> David
What type of information are you looking for?
Shannen