I just got my wideband sensor controller / gauge.

All the diagrams I have show the heater element in the sensor wired to a switched live.

But.

The info in the pack says to wire it to a source live only when the engine is running.

Its not going to be a problem to wire it to the fuel pump relay, just wondered how others have done it, and could water vapor in a cold engine really damage a hot sensor? the reason given for wiring it to the relay.

ETA its a standard bosch sensor.

[Edited on 19/8/14 by r1_pete]

That's how I've done it the meggasquirt controls fuel pump relay.

Regarding water/condensation in exhaust damaging the sensor apparently it can, which is why sensors are mounted at the top of the pipe so it drains from sensor

i not wired, but i will wire to ignition, i not leave ignition without purpose...

dont think will be so much water/wapor in lambda position (pipe), all water gather can / muffler , or lowest point




[Edited on 19/8/14 by fregis]

I am wiring my megasquirt and engine sensors to an IGN switched relay and then my wideband and fuel pump to a megasquirt fuel pump switched relay. Each output after the relays on its own fuse.

Cheers
Stot