It will only add the 2D Weather Radar Panel.

You buy the CS WxR, install it, open the WXR Editor, select the aircraft to add it to and click on the Add WXR button.

It will add these:

Window06=CS Weather Radar

[Window06]
size_mm=525,386
window_size=0.44
position=2
background_color=1,1,1
visible=0
ident=11223
zorder=1
gauge00=WXR!wr_display, 81,32,364,279
gauge01=Captain_Sim.r001.P04!P04_radar, 0,0,525,386

to the panel.cfg (default C172 used in the above example). Press SHIFT+7 to open the 2D WXR panel.