Re: using GPS in a 1955 Packard

Posted by Owen_Dyneto On 2017/2/23 22:30:09

Unless it's been modified your 55 Packard is positive ground, not negative as you state. Your GPS will want negative ground, multiple ways to accomplish the change and others can advise you better than I can. But if you change battery polarity you should be able to feed from the lighter socket indefinitely.