I actually have a code for the bank 1 knock sensor, I know where they are at and all but I don’t know which one is the bank 1 sensor the one closest to me or the one near the firewall.. any help would be appreciated. The parts at Autozone look exactly the same only difference is one has a green plug (front) and a blue plug (rear). It would be greatly appreciated if someone could tell me which is bank 1 and which connector I need