i know this may sound stupid....but i have a 92 prelude and i cannot find the obd plug anywhere...i thought that it was supposed to be behind the center counsole but cant find it.....

 

there should be a removable panel by where the passenger feet should be on the center console. it is a 2 wire harness that is not plugged into anything, or there may be a plastic protective thing plugged into it. wire harness is blue, or green ... can't remember.

 

Check either on driver's side feet behind center console or passenger's side feet behind center console. It has to be there somewhere.

 

Is on the center console behind the radio (around there) it's sort of hard to find, but you have to look for it.