Posted by P and R Pete on July 24, 2013 at 16:34:32 from (50.122.112.223):
Put a new wiring harness on my 450 last Fall, including a new single-wire alternator. Running fine since then. Lately, it's had a weird smell when running that I now realize was a battery acid smell. I'll never forget what THAT is, because it was acrid.
I was using it to pull a brush hog, and noticed that the amp meter had no reading. I lifted the seat, and put a voltmeter on it, and it was 12.72 with the engine off, same with it running. I then noticed that the two lids to the 6 cells were slightly up, and when I looked in, I could see no battery acid whatsoever. There must be some, as the 450 still started and ran without problem. The corrugated cardboard I was using to cushion the sides of the battery looked burnt, unless it was a chemical change.
I'm an electrical pinhead, and have no clue what has happened, and hope somebody can help a poor pilgrim. I don't want to throw a new battery in until I can understand this.
One thing I did was add with the re-wiring was an external resistor. If the coil has an internal resistor, would this add to my problem?
Appreciate your thoughts. Here's my wiring diagram...
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