Gauge wiring

[Knowfish]

Help, I have a 78 GMC half ton 4wd and I am trying to find the correct wire color locations for the ped plug.
25017325 PED-1 no clock or tachometer
I have looked and looked and I can't find a diagram
Any help would be appreciated
I also have parts, what do you need?

 

[dhartman]

Go to the links on this page factory wire harness are on her for many years and options of trucks

 

[dhartman]

You must be registered for see images attach

Not mine from the page under forums click electrical & audio scroll down and member guardian has posted a ton of original diagrams like this.