Each component should be set and connected with different parts in specific manner. Find solutions to your wiring diagram swamp cooler question. Room Air Cooler Wiring Diagram 2. (With Capacitor Get free help, tips & support from top experts on wiring diagram swamp cooler related. Swamp cooler switch wiring diagram . The water cells of a swamp cooler fill the low humidity atmosphere with cool and moisture laden air. (always follow the schematics that come with the switch that is bought, this is only an example.) on the left side is the wiring coming from a breaker with black (hot), white (common), and green (ground). Theswamp cooler motor has quit working because i apparently wired the switch wrong. An evaporator cooler switch is a much better option since it can change from low to high speed as well as fan and pump only. The swamp cooler wiring pictured and explained here is unnecessary if you are installing a window mount cooler or a sidedraft style window cooler. To...