Re: Changing '55 to Negative Ground System

Posted by HH56 On 2018/8/31 18:12:40

Other than possibly having solid state devices somewhere else you have covered the needed changes. A modern Instrument voltage regulator and the reworked torsion level control switch are a couple of items that could have been replaced with a solid state device which would not appreciate the swap.

There is a question on the original voltage regulators. I don't recall anyone mentioning an issue after a swap and there have been plenty of swaps done accidentally or on purpose so there is probably nothing to worry about. Just be aware that for whatever reason some voltage regulators Packard used are labeled positive and negative. Auto parts stores also list many replacements as pos, neg or universal.

Without knowing exactly the differences as to why some regulators are categorized pos or neg it is hard to say if the old one would cause any issues. If there are unexplained or odd charging behaviors after the swap that a repolarization does not fix keep the regulator in mind.