After spending considerable time troubleshooting and experimenting with my generic Tuya Wi-Fi touch switches, I wanted to share my journey and findings with the community. These switches, equipped with a BK7321N chip, presented an intriguing challenge with their backlight functionality. While the YAML configuration generated by ltchiptool worked for the touch switches and relays, the backlight behavior was inconsistent across all buttons, particularly with button 2 remaining unlit regardless of its state.Through meticulous trial and error, I discovered that the backlight control for button 2 required a different GPIO pin configuration compared to buttons 1 and 3. This revelation came after extensive research into the JSON backup data and cross-referencing it with the YAML configuration. The key was identifying the correct GPIO pin assignments and ensuring that the backlight enable signals were properly routed for each button.One of the most rewarding aspects of this project was the satisfaction of seeing the switches operate as intended. The final configuration not only corrected the backlight issue but also enhanced the overall user experience by providing consistent visual feedback across all buttons. This achievement underscored the importance of thorough documentation and the value of community support in overcoming technical challenges.For anyone else working with similar devices, I recommend carefully reviewing the JSON backup data for any overlooked pin assignments or configuration details. Additionally, experimenting with unused GPIO pins can sometimes reveal hidden functionalities or solutions to seemingly intractable issues.This experience has deepened my appreciation for the complexity of smart home devices and the potential for customization to meet specific needs. It’s a testament to the power of persistence and the wealth of knowledge available within our community.