The opportunity to learn with the company Fujikura auto-motive (Thailand) co., Ltd. in the process thousands of wiring sets for automobiles, tape, Part B and C, No.A in which the tape will look at the thousands. Different out The co-op students to observe and collect data found. Each employee Take the time to tape each unequal parts. Due to the different characteristics of each section of the tape and the expertise of its own employees. As a result, production lines, wiring in the car Part No. AB and C, are not contiguous, and the yield is not the goal. Therefore, students in cooperative study was planned. Balancing production lines of wire harnesses in the car Part No. AB and C in order to achieve production targets and production has continued.