I drill a small hole at the front of the cabinet where it can be hidden by the cabinet stiles (sp?). So your wire is hidden at the front inside corner of the cabinet. Then just run it up to your plug-in transformer.
We use the kind that has the preformed connector, so it beats having to cut it and then re-splice it up top.
Also it makes it easier for the rough.... just rough your plug in and worry about the rest after cabinets are hung.
