Yup, agreed Vocky.
I'm going to "risk" it and replace the engine mixture sensor. If the source-signal to the LC-1 is from a wide-band Lambda then the LC-1 simulated narrow-band output just has to be better than the original narrow-band sensor it's replacing.
It says to feed the multi-core cable from the LC-1 into the cab, but most of them can terminate in the engine-bay to make for an easier install.
Red is 12 volts. It doesn't actually say if this should be from the ignition or permanent. I assume that switched is required or the sensor will be heated permanently. I can pick 12v switched from the connector-plug for the original sensor.
Blue and White are Grounds - ideally sourced from the engine bay - could be again from the same connector-plug for the original sensor. I'll trace the Ground in this connector-plug back to where it's sourced from - it's probably where the ECU is also grounded.
Yellow - analogue out 1. This will connect (again) to the same connector-plug used for the original sensor to offer-up the new simulated signal to the ECU.
Black - calibration wire. It seems risky to bring this into the cab because grounding this wire will start the "calibrate-in-air" sequence that could screw-up the calibration enormously because the sensor is normally not-in-air. The LED and switch that connect to the black wire are probably better installed in the engine-bay.
So, the only wires that I need to take into the cab are the two wires feeding the G2 display - Brown (analogue output 2), and a ground from the same grounding-point as the rest.
It looks like you could get this LC-1 working just by wiring the LC-1 multi-core cable straight into a spare mixture-lambda sensor plug such that the LC-1 plus wide-band sensor directly replaces the existing mixture sensor!
Steve
