In many industries, profitability and productivity are ongoing challenges. To increase productivity and profitability, process automation, innovation in technology, and process optimization are all required. Due to the intricacy of the work and the high manpower demands, enterprises in the autoparts manufacturing industry face supply chain challenges. A methodical strategy used to examine the function and its cost is Value Analysis and Value Engineering (VA/VE). It identifies a non-value-adding element that impedes the production of high-quality and dependable goods or processes. In this study, the wire harness manufacturing company used the VA/VE strategy to process optimization. Based on process VA/VE and a strategy for predicting human error, the production processes were examined (THERP). It draws attention to the crucial tasks involved in making wire harnesses. 15% of the faults in the assessment's wire assembly area involved inverted wires and incorrect assembly. A suggestion to enhance the assembly line process was developed using the analysis's findings