It is often desirable to minimize electrical current draw of the different electrical loads of a car. This minimizes stress on components like Alternator, Battery and Electrical cables. This in turn prolongs the life of those components.
Some advise are actually discouragement of non-standard practices that causes higher current draw than modifications.
Ensure that battery terminals are tightened. When the point of electrical cable connection with the battery is not tight, it forms a point of high resistance to current and at that point, the electrical current would be converted to heat, thereby increasing power consumption.
Replace old and degraded cables. Example is the cable that runs from alternator to the battery. When this cable is old and has developed more resistance t..