Electric connection method and structure between seat and body

A connector 22 for connecting a harness disposed in a seat 10 to a body side is disposed at the loser surface of the seat 10 and a connector 28 for connecting a wire harness 26 disposed in the body 1 is disposed on the upper surface of the body 1. Both the connectors 22 and 28 are opposed to each other in a sliding direction of the seat 10 so that both the connectors 22 and 28 are connected to each other in accordance with the sliding shift of the seat 10. The connector 28 on the body 1 side is held so as not to be separated therefrom in a state that the connector 28 engages with the holder 32. When both the connectors 22 and 28 are connected, the engagement state of the holder 32 with respect to the connector 22 is released by the connector 28 on the seat 10 side, so that the connector 28 can be drawn from the holder 32 while maintaining the connecting state between both the connectors 22 and 28.