The electric cooling fan is controlled by the Engine Control Module (ECM) through the cooling fan relay based on inputs from the following components: - The engine coolant temperature (ECT) sensor. - The intake air temperature (IAT) sensor. - The A/C selector switch. - The A/C refrigerant pressure sensor.
Staff bags are big enough to hold everything a pro would need. In fact, they are usually designed after the custom golf bags pros use, so they are larger and heavier than regular golf stand bags. Staff bags are often made of leather and have large pockets. They have space for a full set of 14 golf clubs.
The United States Golf Association sets the rules for the number of golf clubs a golfer can carry in his bag. No golfer may have more than 14 clubs. There is no minimum, but golfers who carry more than 14 are in violation of the rules. For most high-and medium-handicap golfers, that's more than enough.