4WD vacuum line diagram?

[racerized]

Does anyone have a full diagram of the 231 and D30 vacuum lines and their explanations?? The FSM is garbage for this.

 

[Bounty Hunter]

This isn't a bad diagram, but '91+ moved the 4wd indicator switch from the firewall to the axle. Also the vacuum source line may come straight from the intake manifold and not a vacuum canister.

 

[racerized]

So, number 2 on the above diagram, is that the vacuum switch on the transfer case??

 

[Bounty Hunter]

Yes.