Installing aftermarket A/F Gauge, wich wire?

[andakanda]

Hello gents

Im installing a Glow Shift gauge kit in my 98 gsx ( no wideband, will get that later , not tuning now anyway )


So i drilled a hole in the torpedo wall ( dont know if its called that in english, the wall thats "behind the dash " between the driver and the engine )

Now i was thinking id tap the A/F wire into the o2 sensor wich is mounted on my o2 housing ( not the lambda thats underneath the car beneath the drivers seat )

The o2sensor wires are as follows ; 2 black wires, one blue and one white

Wich one do i tap into in order to get a correct reading? ( and i am aware that i will not get a correct reading withouth a wideband o2 )

cheers

 

[Usatuff]

The white wire

 

[andakanda]

Firewall really , its called Torpedo-wall in norwegian

Also an additional question, when i buy a trustworthy wideband o2, should i hook that up to the o2 sensor in the o2 housing or the o2 housing underneath the car ?

 

[Usatuff]

With a wideband you drill a hole in the exhaust and weld a bung on or get a clapping bung. Tue wideband has an o2 of its own

 

[92AWDHX40]

White wire yes, what are you going to use the gauge for?