Hi, I just baught the boost+EGT gauges from Banks. There are 4 wires from the big hoss, black-red-yellow+orange. I figure the black is a common ground because it splits for both gauges, which two do I use for the gauges and what is the other one for? I'm just preparing to install everything including the big hoss+temp sensor this weekend, any feedback on this unit? By the way, I'll be running level one for now:50HP+115F/lbs torque