/C pressure switch hookup for wideband in HPtuners
On my 06 5.3 EXT I am getting ready to hook up my my LM2 so that I can bring the signal into HP tuners. I have been reading about using the A/C pressure switch. Are we talking about the one on the accumulator? It is the only one I see on my truck, however mine has only two wires going into it, not 3 or 6 as in everything I have read about. On my traiblazer one is black and one is blue. Can someone enlighten me as to which one I need to use, or is there another pressure switch somewhere I am not seeing.