Air temp sensor is only fitted to STI's from the factory.
The Oxygen sensor is not fed power, it generates a voltage of 0-1v approximately for a narrow band (stock) sensor "reading" afr's of 14:1-15.8:1 approximately.
If you car is cold the O2 voltage will be 0.00v for the first minute or 2 (depending on how good your sensor is & how fast it gets up to it's operating temp)
Sensors with black dots are 'switches' i.e powersteering load present, Alternator load, cooling fans, fuel pump,ignition switch, A/con etc.
Read this FAQ:
http://www.paulr33.com/powerfc-faq/powerfc-faq.htm