Are you trying to do this specifically for bracketing? And are you using the remote control because you have to, or to avoid camera shake?
I just stared at my D7000 and, unfortunately, there is no way to set off the timer remotely. The remote will only do 2 second delay, immediate capture, or 2-step with mirror up. So, there's no way to instantiate an automatic set of 2 or more exposures, bracketed or otherwise, using the ML-L3. You would have to fire off shots individually.
There are wireless remotes that will do this, but they are 2-piece units that are "wired" in that there is a sensor connected to the camera (hot shoe mount) that is then wired to the camera via a cable, and then a wireless remote (RF and IR available) that will trigger it. These act just as if the shutter button is depressed and do not rely on what the remote settings are in the menus. So you can put the camera in any mode (S, CL, CH, Q, Timer, Mup, etc. - except remote) and fire away remotely.