vacuum diaphragm is the top 1 , it controls a flap to control how much warm exhaust manifold air or cold air enters the engine
heat sensor is the other , its , inside the airbox ,
at least 1 connects to the inlet manifold, behind the throttle
the other may connect to a 3 outlet sensor, also screwed into the inlet manifold
its all about the emissions bs , don`t know specific locations