hi
so i just put in a b16a jdm into my ek n just noticed that there are 4 plugs that arnt connected i know that one is for the powersteering and the other is the o2 sensor but then there is a square one with 2 pins on the right and then theres a round one with two pins on my left close to the throttle body.

also another question is that will and obd2 distributor from an si fit on my b16?

thnx ne answer would help thnx