Conduction tester for wire harness

A conduction tester (10), where, in a cylinder (19) as a contact/separation means, a rod (191) can be separated from and made to be in contact with an inspection section (18), and particularly when the rod (191) does not press the inspection section (18), the rod (191) can be separated from the inspection section (18). Because of the construction above, when pressing of an inspection section body (181) toward a connector holding section (12) is released, a worker can easily slide the inspection section (18) and a slide body (17) rearward along a rail (16) only by applying light force, and the sliding can be effected within a range where the rod (191) and the inspection section (18) are separated. As a result, the upper surface of a fitting hole (123) can be easily opened, thereby installation and take-out of a connector (60) is facilitated.