99.99% of these problems are preventable. I should know - the school of hard knocks kicked my butt when I first started wrenching as a teenager. I guess there should be a sticky about this
BEFORE YOU TOUCH ONE WIRE ON THAT BATTERY!
LABEL IT.
I got so lazy, when I went (yawn) to work on the electricals, I (yawn) went to the disconnect switch (yawn) and turned it off, before I disconnected the SINGLE RED positive cable and SINGLE BLACK negative cable. People will spend a fortune for unneeded gizmos then practically end up in the cardiac ward because they didn't bother to find out how to make battery management simple enough to meet the needs of the laziest of engineers. Trust me, electrical engineers, good ones, have Simple to understand battery management systems. I assemble clean stuff, paint the POSITIVE with RED spray paint. I mean GO FOR IT! Lugs, terminals, a a nice splotch around the post. Good enough to ID at twenty feet. The SERIES connections, the NO-TOUCHEES, linking batteries for series I paint with GREEN enamel. I'm going to have to remember to get a can of YELLOW enamel and do the negatives as I really like the idea of doing low voltage negatives in YELLOW, including wire insulation color. The feeder and circuit negatives.
