Hey guys, thanks for the super quick reply!!
So quick question to kenta as he owns the 620....I have seen it comes with a marine mount whit a power cable ending in...cables, not a plug (sorry for my poor english, not my first language).
As I should carry it from one boat to another and ideally plug it in the 12V dc socket of the helming station, do you think I can just isolate and forget the nimea wires and solder the red and black for power to a spare 12v plug?
Thanks again!

M.