PURPOSE: To improve the space efficiency in a wiring harness using a flexible printed circuit board(FPC).

CONSTITUTION: A wiring harness consists of a connector housing 3, an FPC 1 and a contact 2. Terminal units in two lines in the longitudinal direction and four lines in the horizontal direction are arranged inside of the connector housing 3. The FPC 1 is formed with parallel conductors 4 in the number corresponding to the number of the terminal parts of the connector housing 3. An end part 1a of the FPC 1 is formed with a notch. The contact 2 is caulked with a terminal part 4a of each conductor 4 of the FPC 1, and abuts on the corresponding terminal part of the connector housing 3. At the time of assembling a wiring harness, the end 1a of the FPC 1 is folded at the notch, and under the condition that the contact 2 is formed into an arrangement pattern corresponding to the arrangement pattern of the terminal part of the connector housing 3, each contact 2 is made to abut on the terminal part of the connector housing 3.