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According to some literature I've read (which was wrong on the connections for Vss but it's the best I have!!); yes it's a 0 to 5V signal, from a strain gage based sender. So that's good news.
Thanks a lot for the coding tips.
Do I need a resistor and diode in the circuit like the Vss and injector? I'd have thought as this is taking an analog value, it's unnecessary. Presumably the input impedance of the Arduino is high so I should not upset the voltage the car's ECU sees.
I'll try and implement! This is a lot of fun...
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