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Help with wiring if possible

Stani1029

Club Member
This is regarding my SR micra, now i havent had a go at these final wiring issues but i am just trying to find out as much info as possible to make it easier, the full wiring is almera gti but i am now using a pulsar ecu with nistune

Does anyone know what these symbols circled in green mean?

Does anyone know why the o2 sensor uses pinout 19 and 2x111?

My car is running but i basically have no use of the tacho, knock sensor or o2 sensor which all work on the stock ecu.
thanks
 

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