Re: Fails to start warm

Posted by HH56 On 2020/7/29 13:51:36

Quote:
Could be sometime in the past the polarity was deliberately changed or more likely someone more used to working on later cars might have wired the coil in the way he thought was correct not realizing that Packard until 56 used a positive ground.

The coil works either way but for the strongest and most efficient spark which is one jumping from the hot center electrode to the colder side or shell electrode the coil needs to be hooked up the proper way. If your battery is now connected as positive ground then following the wiring diagrams is the way to go.