It is very hard to add the CS Weather Radar to display in the VC. The gauge mapping is done in the modeling process where the gauges are applied to a texture. That texture is "assigned" a location in the VC.

In most cases you will need to replace a gauge to have the weather radar show. I would recommend FS Panel Studio if you want to try. You will also be limited to the maximum size of the original gauge or some of it will not be displayed.

Mark