what i read from the instructions, it said to use the lead wire on the tps or dbw to tap in for the wot switch, so you have to program the box with a series of pushing the button on the box and holding the gas down. i didn't put the n20 before the maf per the manufacturers instructions, and i wasn't there when they decided it would be a good idea to use speaker wire to extend the box wiring, so i will be re doing that. and the box has two vacuum lines that you put one directly to the vacuum port on the fuel pressure regulator and the other one on the vacuum port that was supplying vacuum to the fpr.