Furuno power cables - which couloir is the positive?

[Iskander-M]

Hi guys,

may any be a stupid one, but I need a power cable for a unit I buy on eBay and the power cable comes as black and white. Which one it the plus (positive)? Thanks in advance

 

[dingbat]

Hi guys,

may any be a stupid one, but I need a power cable for a unit I buy on eBay and the power cable comes as black and white. Which one it the plus (positive)? Thanks in advance

Ground is black

 

[Iskander-M]

Ground is black

Thanks mate!