Wiring in Narrow Band air/fuel
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i have the guage light ran into headlight switch, and since i have tru-duals i need a 3 way switch right? just wire a signal from both o2 sensors separately? i take the signal from the guage and run it to the center post of 3 way switch, and the other 2 posts go to the signal wires from the o2's right? well i did this and i have no reading... the guage is sittin on rich and i have no reading... and comments, or help is great, i tapped the purple/white stripe wire, and the purple, they are the high signal wires for the o2's..