How can I get the time for a simulate signal express vi waveform?

[Mott777]

I tried converting to an array and then indexing, but every index I try only gives me the y value. See attached VI for clarification on what I mean.

[crossrulz]

You will have to keep track of that yourself.  You are sampling at 360kHz.  This means that each sample is ~2.8us.  You can easily get the time by taking that dt (2.8us) multiplied by the sample index and adding the time at which the first sample was taken.