In this video I explain why the Cummins 12 Valve is one of the easiest engines to swap. I show every connection: the starter solenoid ignition power wire, the main starter power wire, the fuel supply line, the return line from the injection pump, how to hook fuel up to the lift pump, how the throttle is controlled, and how the shutoff lever stops the engine. Once you see how simple these systems are, you’ll understand why the 6BT Cummins 12 Valve is the king of simple engine swaps. #Cummins #12V