Re: GM circuit numbering

["nacelp" <nacelp@bright.net>]

> Just wondering about the numbering scheme used for GM schematics. For
example - Ignition modules to ECU use four circuits:
> CKT 423    EST (Electronic Spark Control) from ECM
> CKT 424    Bypass Control from ECM (sense to ECU too)
> CKT 430    Reference to ECM once per ignition event
> CKT 453    Distributor reference earth
> Where do these numbers come from?

GM

> Is there a "standard" colouring scheme for these circuits?

Standard GMESE,  <<g>>
GRumpy
>
> PG.
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