low down on the throttle body, like, below and closer to the firewall than the bottom of the idle speed control valve (but on that side of it). (Note when i say closer to the firewall im refering to a rwd car, if urs is fwd, just imagine how it would be in rwd ).
Ill try and get a pic, but i havent got a camera so ill see if i can borrrow a friends. let me know if u haven any luck finding it.