I have a 88 civic lx, I swapped a d16z6 using boomslang dpfi to mpfi obd0 to obd1 conversion harness. Having trouble with the oxygen sensor wires though. Coming from the O2 sensor is 2 white wires a gray and a black, I just need to know which wires are which. The o2 +12V, O2 heater, o2 signal, and o2 ground. Need help with which color is what.