hey its much easier if you take off the white plastic that's makin it harder for you then solder the led lights then put it back together
note: i found out if your wiimote doesn't work after this mod, it could've been bad solder or some circuits, just scrape off the solder then it comes back to live, thats what happened to me lol i tried get a 2 for 1 deal at bestbuy but i fixed it.