The Orange Pride Car Wash has been the most affordable car wash in Stillwater, Oklahoma for some forty years. Originally there were four Orange Prides, now they have all closed or sold to different owners. Keeping these wash bays open and running is sometimes a bit of a challenge. Self Service Car Washes seem simple enough on the outside, put in the quarters, select a function and wash your vehicle. If everything works, we don't think much about how it works. But the part you don't see from the outside, the components that make it work, can be confusing when seen from the inside. This book attempts to explain the components, functions, maintenance and repair of a Self-Service Car Wash. A new section for low voltage troubleshooting and overrides was updated in this 2nd edition. By breaking down the various parts and pieces that make up the necessary equipment and explaining the interaction of that equipment so that out in the Wash Bay you can push a button and wash.