now when set the climate control to 32 in manual mode.. heat comes out. when i set it anything below 32.. ie 31.5 down to 18.. cool air comes out.
my wagon orignially had a JDM S1 climate control unit faca.
friend gave me a JDM S2 unit that worked in his wagon to control heat from 18 to 32, but not for heat in mine.. so i know it is not the control head unit.
Picture as bellow:

i came across a item while checking that everything was plugged in properly for the heater system.. came across the "Thermosensor Controller" which is screwed to the side of the centre dash behind glove box under the heater unit next to cd-player. Can these die, can a new one be purchased?
has anyone come across this problem b4?
j have the wiring info that legacy777 posted.. head units look different, but will have a tinker with the multimeter.