FYI anyone searching about modding their Finnex Ray2 and finding this thread:
I pulled apart my brand new Ray2 (pulled the end cap off to expose the wires). This model has the AC-DC transformer packed into the frame instead of using a power brick.
The lights (my 24") draw around ~68V, which is too much for the MeanWell LDD LED drivers that I've used in the past.
I am not an electrical engineer, so I don't know where to go from here. Just reporting my findings.