Customer Questions and Answers for Dishwasher Detergent Dispenser Assembly by Whirlpool

Chris, Without a correct and complete model number it's a bit difficult to verify proper parts and wiring to or for a component. In general, If the new part is " it is identical to the old one except for the terminals on the solenoid. The old one has two terminals and the new one seems to have only one". Then the new part is defective. The solenoid needs to have two terminals in order to complete the circuit, and operate. You'll need to contact the APP Customer Service Team (1-877-477-7278) and make arrangements for a new replacement dispenser and return the defective part.