If you want to extract power from a general RC car receiver such as a turbo racing receiver for lighting purposes, but you don't have any spare channels, you can use this to extract power. "Receiver → servo" The connection is "Receiver → Branch Connector → One end goes to the servo, the other to the power supply for the lights." It can be used by branching it out like this. Connectors of this shape are difficult to make yourself, so I would say they are an essential item for anyone who decorates decorative lights!