C4 heater vacuum line colors

[Shadoweffect]

Hi everyone
Does anyone know what the colors on the heater A/C switch reference too on a 1985 vette. I need to trace the heater water flow valve as I have no vacuum at this point. The colors I have are:
Red= ?
Brown= ?
Pink= Windscreen Vent 1
Blue= Windscreen Vent 1
Orange= Max Air Con Vent

Thanks