Im working on a '80 w900a and Im replacing the air lines for the heater controls on the max A/C and recirculate switchs, my problem is the output airline is gone on the max A/c side and I cant figure out where it goes to, can someone please tell me where this line hooks up to, I included a picture of the heater controls, Thanks
Call the local dealer with your vin. They can email you a schematic of whats what. Sometimes the older trucks on microfiche they will cry a bit.