The man is asking about how to hook up the thermostatic air cleaner. The answer is that the air cleaner temperature sensor (the flying saucer-lookin' thing on the floor of the air cleaner housing, visible by removing the air cleaner lid, with two nipples sticking through the underside of the air cleaner housing) gets one of those two nipples hooked to manifold vacuum, and the other goes to the vacuum actuator on the air cleaner's snorkel. The carburetor nipple identified as "heated air" is the one intended to supply vacuum to the air cleaner temp sensor; carburetor operation and repair manuals and links to training movies and carb repair/modification threads are posted
here for free download.
The system is described in detail
here, for those who think it's controlled by a vacuum switch on the intake or thermostat housing, or confusing it with the manifold heat control valve located in the exhaust manifold, or otherwise bewildered.
