lambda wiring prob need sorted asap

[alan b]

well lads the lambda on my c20let is ****ed and i have a 4 wire one here which i no is good, i just dont no which wires are which! theres 2 blacks a white and a blue, any body know which is which? cheers.

[phazer]

It should be:

Blue: Signal
White: Ground
2xBlack: Heater 12V

[alan b]

nice one mate, you have any idea which wires are which then on the c20let loom?

[phazer]

Sorry mate, no idea on the LET.

The 12v is easy if you have a multimeter - this should be live when the ignition is on and when the engine is running.
Ground should be similarly simple too, leaving you the signal wire :)