Abstract: A method of providing information to a user of a car wash is disclosed. The method includes receiving from a car wash one or more signals representing one or more payments. One or more signals are received from the car wash representing a value of one or more car wash functions purchased with the one or more payments. An indication is recorded of the value of the one or more car wash functions purchased with the one or more payments. The method also includes providing information that includes the indication of the value of the one or more car wash functions purchased with the one or more payments. Other illustrative embodiments pertain to a vending machine messaging device and a car wash.

Abstract: A car wash includes a controller having an input element and an output element. The input element is configured to receive an input representing a payment. The output element is in operative communication with the input element, and is configured to assign an output comprising a bonus value of a product or service to be dispensed if the payment is of a preferred form.

Abstract: An interlock switch module for a microwave oven provides a unitary housing containing primary and secondary interlock switches, interlock and logic monitor switches, and a cavity lamp switch. Apertures are provided in the housing to receive actuators external of the switch module. One actuator is contained within the module and is adapted to be actuated by a portion which protrudes from the module. Sequencing and timing of the switches are provided for.