Originally Posted by
tabetha
Black is signal, white are for 12V heater circuit for the lambda, grey is earth, on the Lambda, I would assume(but check) that on the AFR gauge the red is live, black is signal, grey is earth.
On the lambda the white wires are not polarity concious, as no making so just live on one and earth on the other, the heater circuit in the sensor speeds up the delay in reading
as they don't work till a certain temperature is reached.
tabetha
cheers tabs so in essence you are saying the white wires on the lambda are a 12v live feed ??? and it doesnt matter about polarity bit like a motor ??
think the grey wire on my meter is signal ..... as its an led type meter so assume the blk and red are 12v feed ???
cheers for the help
and i assume the 4 wire preheated type sensor are up to the job then ??
