Hi...i am a new user here. For my fuel pressure sensor, it also is not connected to the ECU. It will be a 3-wire transducer that operates on 5V. It will output .5 to 4.5V for 0-150 PSI. I've read the tutorial and can use pin A18 to supply 5V. I take it I'll ground it to where pin A12 is grounded, an...