vtecman253

i'm installing an autometer a/f gauge in my 99 civic si. i have 4 wire o2 sensors and this is where the problem started. the gauge has three wire, ground, power, and signal. the ground and power are connected and the gauge has power but does not output a reading. i'm splicing the wire from the 02 sensor right before the collector of the exhaust manifold. which wire should i splice!?! i've tried most but still no reading, so i was going to try to splice into the wire somewhere closer to the ecu, but the colors change and i have no idea which wire i'm supposed to connect the damned thing to. please help, asap!

vtecman253

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