I was just wondering if anybody knows what wires I should connect my A/F meter too. The MPS 3 has a 5 wire sensor. I know it can be done, Ward has it done, but, I spoke to APC, who did the work and was informed that they just called someone from Mazda they knew and were told how to do it. My problem, they don't know who it was.

I've spoken to Mazda, no help there. I've gone to Mazda and photocopied the wiring manual for the O2 sensors, but, they don't say what each wire does, just where it comes from

Can anyone help me? Thanks, Troy.