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This is just a quick post to let you know how critical grounds are.
I've been looking for the culprit that is keeping the alternator on my boat from bringing the voltage up to snuff, meaning 14.2v. It is a 70a alternator, but I'm only seeing it throw 30a and the voltage is only coming up to the mid-13's.
So, I went looking for things and found the ground wire to the alternator broken off. And, with the paint on the alternator and 30 amps being thrown there was .8v between the ground wire and the stud. So, the case was at 14.2v but the battery was at 13.4v.
A case of too short a cable and no give for a little vibration?
Was the original just crimped or soldered as well?
I solder all connections on our boat and being an Alloy hull good grounds are on the top of the list of must haves.
Cheers Steve
The cable seems to be long enough, but it was just crimped. I will solder the replacement back and use adhesive heat-shrink tubing on it, as I do with all "smaller" wires, meaning anything smaller than about 8 gauge. The larger sizes I crimp with my hydraulic crimper.
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