Reward for lost Kraken!
Join Date: Apr 2006
Thanked 137 Times in 134 Posts
Rep Power: 11
Closest I'd say is that white is the neutral/return in AC wiring, and sometimes in a 2-wire setup that would be the "ground". Maybe an AC electrician did your boat?
If you're not going to save much of the old wiring, why not just pick a new scheme, standard that makes sense to you, and go with it? There are standards and standards, a lot depends on how complicated you need to get and how many spools of colors you are willing to buy.