Finally got it connected to a SQL server instance. But not sure what to do from there. Nothing is really populating.
There is very good documentation available here: https://docs.splunk.com/Documentation/AddOns/latest/MSSQLServer/About
Use the left pane to look at the installation instructions and there is also a troubleshooting section.
Hope this helps!
I read it. But a how to documentation how to use it.