Help - Weird Wiring on Regulator

[kansasc10]

Anybody seen this before? The white and brown wires that are supposed to go to the external regulator plug, (#2 and #4) are spliced together for some reason and Im trying to figure out why and what that would have done to the charging system. Im having battery drain issues and was checking the regulator when I noticed the weird wiring. Just wanted to see if anyone knows why the previous owner might have done this before I go changing it. Im hoping that connecting them back to the regulator plug will fix my issues.
72 C10 w/ 350.