the pointy end is the bow
Join Date: Aug 2006
Location: La Conner, Washington
Thanked 27 Times in 26 Posts
Rep Power: 11
Re: Checking Alternator
Turn your battery switch off and then check the largest terminal on your alternator and/or starter to confirm there's not juice there. Or you could just disconnect the negative terminals on your batteries. The alternator has a pretty big wire on it that's hot. It wants to find a path to ground (the negative terminal of your battery). That's why there are big sparks when your wrench touches anything metal while removing that wire. Don't ask me how I know that.
1983 Fraser 41
La Conner, WA
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Boating for over 25 years, some of them successfully.