I have a water cooled spindle I only need the VFD drive. Does the VFD come with instrutction on hooking the VFD to Mach3?

The VFD does come with a manual that details the wiring and connection specifications, terminal features and a list of the parameters. There is no information on how to connect it to Mach3. It does detail the specifications within the parameters and terminal features on the analog input that is used with Mach3 and other control programs.