Imma take shot in the dark and say you are referring to the difficulty of connecting the hose to the truck. To connect the fire hose to the fire engine, you get the fire hose and click on the FRONT OF THE TRUCK. For some reason, it doesnt work when you right click the back of the truck like the other mods. Also to connect the hose to the fire hydrant, get the fire hose and connect the hose to the fire hydrant first then connect it to the truck. Is that better? That way you wont run out of water.