I'm going to defer to the experts on the board, as i'm not an electrical engineer. I installed my protrans, then purchased the above mentioned 3 step, an msd rpm module & a trans brake button. The 3 step has module #1, #2 & #3, but the directions are in gibberish with this open with voltage & that closed. Which module is for the burnout chip, the trans brake launch rpm module & the high speed chip? I know the whole unit gets plugged into the high speed chip slot on my 7al2. i dont want to screw this up. Thanks in advance for the expert advice. Dave #1355 ss/ea