I recently bought to my existing system a Victron SmartSolar Charge controller MPPT 100/30. The idea was to replace the old controller with this one. Well, now when I wanted to install it I noticed there's no incoming place for the cables going to the load (lights, usb and so on). In all the controllers I've had before there's been incoming connectors for the battery, the panels and the load. So sorry for not getting this, but how do I do this, what is missing?