The defi a/f gauge is a narrow band o2 sensor, I have already read how to convert it to accept a 0-5v signal coming from the lc-1 using a potentiometer. My question is, since the defi gauge does not have a serial out like the xd-16 gauge, where do the purple and blue wires go? How would I go about in hooking the defi gauge with my lc-1/datalogit?