02 Wideband Install - MK2 1999 Eunos

[makoto]

Hi chaps, 

Im planning on installing a AEM wideband on the car, but Im not sure which wire on the ECU it connects to for the signal. Can anybody point me in the right direction with this please? I've done some searching and in places it mention pin 2C - Blue wire, but just need confirmation on this please? Thanks

[snowbird1]

2C is the input for the front HO2S but I don't think you can connect a wide band sensor to a stock ECU. The Mazda ECU is designed to accept a 0-1 volt switching signal and I think the wide band sensor will have a 0-5 volt analog output.

[makoto]

Hi thanks for the reply. I will be using a megasquirt standalone ECU , not the stock.. So just need to know which wire the wideband goes to

[snowbird1]

OK - that makes sense, yes it should be the blue wire and I think it is screened.