6v positive ground question

[DonaldSmith]

The basics is the connection of the cables to the battery.  Positive ground, cable from (+) post to engine block.   Negative ground,  cable from (-) post to block.  The wiring loom doesn't know the difference.  Certain polarity-sensitive accessories, like the radio, will know.   The coil shoild have the polarity as marked.  This may be an oversimplification, but it's the place to start.  

[DrDoctor]

  

Edited October 27, 2017 by DrDoctor