Raymarine Dragonfly 5-Pro Wiring Help

I have a RM Dragonfly 5-Pro I purchased from an auction house that didn’t come with a power cable. I’m trying to connect some wires to the pins on the back to test and see if it powers on, but not 100% sure about which two pins are pos. and neg. I’ve attached a photo which supposedly shows the diagram but it’s a bit confusing to me (shows #6 and #4 as being red and #5 & #7 for black).

Can anyone shed some light on which of the 2 are pos./neg.? Thank you in advance.

Attachments:

1. 

   Clipboard02.jpg
   

2. 

   5-1.jpg
   

Why not just buy a new power cable?

https://www.hodgesmarine.com/Raymarine-Power-Cable-F-Dragonfly-5m-1-5m-p/rayr70376.htm?gclid=Cj0KCQjwjtLZBRDLARIsAKT6fXz5cjO-HyXmv1nZ6gpZ9n2raAZVzRtS6fSORiXTdt24Rg93Q95kbSYaAohoEALw_wcB&ppcstrkid=1565162769&click=19&ppcsclkid=ImKUA59WpV08&ppcsu=xhg7f5djqeniramsegdoh

I just wanted to verify that it works first.