Introducing the AFE 42-90002 DFS780 Fuel System Wiring Harness, proudly made in the USA. This top-of-the-line wiring harness is designed to reduce wear and tear on your DFS780 pump, and features an exclusive boost switch that activates the pump only under load. Whether you're a professional diesel mechanic or a passionate DIYer, this wiring harness is essential for anyone running a DFS780 or DFS780 PRO diesel fuel system. Trust us, this is one upgrade you won't regret!