Porsche 944 heater solenoid
 

I have a 1987 944na that blows hot air 100% of time. Trying to isolate the problem, I "hotwired" the vac lines to close heater valve and now AC works just fine. Now trying to find problem that allows the heater control valve to stay open.. their are two solenoids in the heat/AC control unit under the dash- one for fresh/circ air flaps and the other for the heating valve. I would like to replace both but cannot find the part numbers on the internet --- does anyone know what the part numbers are for the two solenoids and has anyone had a similar problem?

This may be a duplicate post...

Thanks, Harry