Circuit body for vehicle

A circuit body for a vehicle which is wired on a vehicle body of the vehicle for performing supply of electric power to an electrical component and communication of various communication signals with the electrical component, the circuit body comprising:

• a plurality of control boxes separately disposed on the circuit body and capable of controlling input and output of at least one of the electric power and the communication signal;
• a trunk line harness connecting one of the plurality of control boxes and another of the plurality of control boxes;
• and
• a branch line harness connecting the control box and the electrical component,
• wherein the trunk line harness which connects at least one of the plurality of control boxes to be disposed in an engine room of the vehicle and at least one of the control boxes to be disposed in a passenger compartment of the vehicle is covered with an exterior member having a tubular shape.