The GeneralAire 7637 is the correct set of internal cables for the following humidifier models:
The GeneralAire 50-17 Internal Humidifier Cables is a set of replacement cables for the GeneralAire Elite Steam DS50 and DS50LC Humidifier models. The 50-17 internal cables, also known as the internal wiring kit, are an essential electronic component of your DS50 humidifier model. GeneralAire notes that all wiring must be in accordance with local, state and national electric codes. Please consult your humidifier manual for wiring guidelines and tips.
GeneralAire 50-17 Internal Humidifier Cables specifications: