Quote:
Originally Posted by 2.5Turbo
Kinda the same rule as always connecting the positive terminal first on the battery. If you do the negative first, then everything metal is negative. If you hit something with your wrench while tightening the positive terminal, you'll have a wrench welded to some part of your car.
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Very early on, I did the same thing. Problem was that it wasn't on my MB, it was on a Freightliner.

4x 1000cca batteries + 3/8 ratchet + frame = 1/4" diameter arc of metal melted off my ratchet.