A harness for a medical device is provided which can suppress defective products from being passed to the subsequent process. The harness 10 for medical device 1 comprises: cables 20A-20D which is to be inserted into a tube 3 of the medical device 1 a camera 30 which is connected to one ends of the cables 20A-20D and printed wiring boards 40A and 40B which is connected to the other ends of the cables 20A-20D, and a following Expression (1) is satisfied. W1
