question on bulkhead connector bypass

found excerpt below helpful overview of auto charging system basics if anyone else is interested. Article had some other interesting auto electrical info. fwiw
Explained what I wanted to understand: my old wiring and bulkhead connector are not constantly dealing with 60A max of my alternator or anything close, but most likely (on my car anyway) quite a bit less.

Charging System Basics

Current Demand and Flow:
If you have an alternator that can produce 120 amps of current (max) and the the total current demand from the electrical accessories (including the battery) is only 20 amps, the alternator will only produce the necessary current (20 amps) to maintain the target voltage (which is determined by the alternator's internal voltage regulator). Remember that the alternator monitors the electrical system's voltage. If the voltage starts to fall below the target voltage (approximately 13.8 volts depending on the alternator's design), the alternator produces more current to keep the voltage up. When the demand for current is low, the full current capacity of the alternator is not used/produced (a 120 amp alternator does not continuously produce 120 amps unless there is a sufficient current draw).