How to Synchronize a Wii Remote to the Console: 10 Steps
What to Do if Your Wii Remotes Won't Sync
Nintendo Support: How to Sync a Wii Remote with a Wii U Console from the HOME Menu
Nintendo Support: How to Sync a Wii Balance Board with a Wii Console
For Wii U Nunchuk Controller Joystick Gamepad Replacement Sync Wii Nunchuk WiiU Nunchuk Controller for Home Wii Remote (not inclueded)Video Game Consoles Pack of 2,Universal for Adult,Kids - Walmart.com