The VR is a switch that opens and closes the battery voltage to the alternator. By jumping that connection (just bypassing the entire black box with a jumper wire and 2 clips to the ends) you are running the alternator at "wide open throttle" and it will COOK your battery like a tea kettle left to boil dry. The VR has points in it that open and close 50~200 times a second to "duty cycle" the alternators stator winding voltage and that keeps the output at ~14.7V. You can get another mechanical regulator or get an electronic version of the 'old style'
from
regulator tech
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