Opel Speedster Operation, Safety, Maintenance Manual page 41

Heating, Ventilation
Heating and ventilation system
Opel air mixture system: by mixing cold and
hot air the temperature can be regulated
without delay and held practically constant at
all speeds.
40
Heating and ventilation controls
Air distribution switch
£4 To foot area
£1 To defrosters and foot area
r? To defrosters
The rotary switch can be set to any
intermediate position in order to adjust the air
distribution to suit personal requirements.
Open the ventilation jets when the switch is
set to 931 or V537.
Temperature switch
Hotter
Colder
To red
To blue