The Whirlpool WP74005890 Range Terminal Block is an essential component for your Whirlpool, Jenn-Air, Maytag, KitchenAid, or other compatible brand's range. This little electrical connector is essential to getting your surface burners started. This is how it operates: The range's wiring harness provides the electrical current to the terminal block. The spark igniters, which are positioned close to each burner head, get this current after that. You may begin cooking when you flip a burner knob because the terminal block provides the spark needed to ignite the gas. The improper igniting or sparking of your burners may be caused by a malfunctioning terminal block. The WP74005890 can be used to replace a defective terminal block, ensuring the safe and effective operation of your range.