Flex-a-lite 31148 Green Illuminated Manual On/Off Rocker Switch
This Flex-a-lite illuminated rocker switch is great for cockpit control or override of fan function. May be wired to actuate fan regardless of temp setting (end of a heat, or at the beginning of a hard pull), or -wired alternately - can be made to disable fan function, regardless of temp setting (great for water crossing).