Re: Stewart's 1955 Packard 400
Posted by HH56 On 2023/8/8 20:25:39
Quote:
Stewart Ballard wrote:
I have found a lot of "toast" in this car over the years. I believe the previous owner hooked up a battery with negative ground and walked away for a time.
Nothing in a stock Packard would have been damaged with the battery connected backwards. Motors still work properly because unlike PM motors, the field coil types Packard used are connected internally to maintain the same magnetic relationship to rotate the proper direction no matter the polarity. Worst would be the amp meter reads backwards and generator might not charge or the spark might be a little weak because it was jumping from the colder shell to the hot center electrode instead of the other way around.
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