Hi Friend,
You leave lot of unanswered questions. How did they sell you the router, 3 axis + rotary? ( typically this is how they build the routers in China) If so, than you have X, Y, Z axis plus the rotary. This makes your machine just 3 axis and a rotary (or as they call it: lathe). Is there a connector at the end of the rotary wires? If there is, than there must be a connector on the control cabinet to plug it into. In this situation, you should have about a foot of wire sticking out of the cabinet that can be unplugged. Than you have to plug in the the rotary's plug. For the rotary motor to run, it needs a driver, therefore, it takes the X axis or the Y axis's driver to to run the rotary, depending witch axis does the rotary revolves around. Mine rotates around the (long) Y axis. If you bought the rotary separate, than it's a different ballgame. I need to know what exactly you have, before going into how I've done mine. Post pictures, or email me the pictures, of the rotary, the inside of the control cabinet.
Have a nice day,
Mike