Write the next sentence in this paragraph:

How to change a cummins 12 valve thermostat
Disconnect the negative (black) cable from the engine's battery.
Drain the engine's coolant into a container.
Close the container as soon as liquid stops draining from the truck.

OPTIONS:
(I). Reconnect the positive and negative terminals of the battery under the exhaust tubes by removing the negative (white) cable with the positive and negative terminal attached to the battery tubes. Clean out the drain tube tubes by pulling one fuse flush with a new fuse.;
(II). Try this simpler method, but may seem old fashioned. Detach the radiator's fuel hose from the engine.;
(III). Disconnect the motor shaft fittings from the engine. Fill the loading chamber with fresh fuel and oil.;
(IV). Lift the belt tensioner with a 3/8-inch (9.53 mm) breaker bar and remove the drive belt. Disconnect the engine's upper radiator hose from the thermostat's cover.;
(IV).