Quote:
Originally Posted by JamieGeek
The - and + posts are different sizes, I attempted to put the switch on the + post and it wouldn't fit.
My guess for the reason why: All the metal around the battery is -/ground thus when using your wrench to put the switch on there is the possibility of shorting + to - which would be bad. Putting the switch on - eliminates that possibility.
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This is correct. Less chance of a spark that could actually cause a battery to explode. I've seen it happen. Luckily the guy was wearing safety glasses.