Check the listing for details. RAINBOW Genuine D4C Main Power Switch. Condition: New. Listed at 26.79 USD. UPDATE: The current version switch no longer has 4 wires and requires crimping. This switch will include 4 blue terminals for when you are replacing a 4 wire switch, like the picture shows. If you have a 6 hole switch, you will use 2 blue terminals and 2 yellow terminals that are provided. A video link will be in the order e-mail showing connections. This switch works with all D4C Rainbow systems. If you have a switch that has 6 holes where the wires push in, please read information below on how to wire this design switch. Factory OEM switch for the D4C SE (Special Edition) and D4C model Rainbow. This switch first came as pictured in the early version D4C that came out in 1986. Rexair then changed to a new design switch that did not have wires attached. The new version had six holes that you would stick the wires into. Inside each hole was a spring loaded catch that held the wires in place. Over time, the factory found that this was an inferior design and went back to the four wire system.