its kinda hidden in the pic its between the air filter and tube the heat sheild is covering it up btw the heat sheild came from a kit for a truck and i ground it to fit around the bar and theres a groove at the bottom that all the wires go through and i cut the old air box and left the tray tht the pcm(i think its the pcm i could be wrong) sits on and added a screw to hold it down better i also had to extend the black tube thing to make it reach correctly ill get a pic of both posted for ya