This case study outlines the collaboration between AbelConn, a Celestica company, and a long-term customer focused on the Early Supplier Involvement (EIS) in the manufacturing process of the F-35 Joint Strike Fighter. The project involved enhancing a circuit card set, requiring real-time feedback on Design For Manufacturability (DFM) and the development of initial prototypes. The case study presents AbelConn's approach to addressing the challenges of the project, highlighting their flexibility and communication with the customer. AbelConn provided DFM reviews, conducted risk analysis on component availability, and facilitated the First Article Inspection Report (FAIR) process. The results of this collaboration yielded a functioning integrated electronic feature set for the customer, demonstrating the effectiveness of ESI in improving manufacturing processes. The partnership fostered trust and opened avenues for future collaboration, showcasing the benefits of engaging in ESI in complex projects.