Stede Posted June 1, 2022 Share Posted June 1, 2022 I have a question about my 49 merc? Is it a 6v system and if so do you hook up backwards. I say that but neg to pos pos to block? Just making sure. Link to comment Share on other sites More sharing options...
Rusty_OToole Posted June 1, 2022 Share Posted June 1, 2022 Like any typical Ford product of the era, electrics are 6 volt positive ground. That is, the ground strap to the body or engine block goes to the positive battery terminal. Link to comment Share on other sites More sharing options...
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