Yesterday my bro and me put on a new intake and tookout the old stock intake. The car sounds great now

But one small problem the check signal is always on when the car is on. There's 2 sensor plugs and we got one to go into the intake but the other one we couldnt find a place to put it. my bro is thinking of taking the area where the plugs plug into from the stock intake and putting it with the new intake(kinda hard to explain). My bro says it's ok with the check signal on, you guys ever have this problem with an intake? help me out ok guys!