Ok ive searched everywhere but cannot find clear and exact instructions on how to hook up an oxy sensor to a Silvertop ecu.
I have a universal 4 wire sensor with 2 wires for the heating element a ground wire and a sensor output wire.

And there are 3 o2 sensor related pins on the ecu

N8 - HT - Heated oxygen sensor
M6 - OX - Oxygen sensor
M13 -OXL1 - Oxygen sensor

So i'm assuming I should wire one side of the heater element to and ignition switched +12VDC
and is the other side wired to N8 and pulled to ground by the ECU to activate the element?
and should the ground wire of the o2 be wired to a chassis earth or N9 on the ECU (sensor ground)?
and as for the sensor output, M6 or M13?
Or do I have it completely wrong?