For the LC-1, the brown wire is your 0-5v wire (wideband signal) and the yellow wire is 0-1v (narrowband simulation signal). You either need to wire the brown into your ECU directly or wire the yellow in and
reprogram the yellow using LM Programmer. By reprogramming the yellow wire, this will allow you to have two 0-5v wires (typically needed if using a DB gauge or one that requires an wire input.
To get them to display in V3, you need to tell the software where to look for each sensor.
See this screen shot.
You will find the row that contains what input you are using and then in the second column you'll tell the software what sensor is should be looking for. You can then rename the third and fourth columns if you'd like to say whatever you want. Column 3 is what you'll see below the graph. After you make these changes,
make sure to click the "Save pin assignments" button. Then go into your displayed values (push F9) and add them to the list.