kinda but not exactly. How's that for an answer??
First, if I am wiring any 120V stuff, it follows NEC convention, black, white, green.
for 12V if I use the std color striped zip cord, then white is ground, and striped is hot.
If I use marine jacketed wire for 12V then it is red=+ and black = ground. However, at the converter panel or any grounds to the chassis I use a piece of white heat shrink to denote the 12V "convention" for ground.
and when I use welding cable for 12V high current, the wire is all black, but I use red heat shrink on the connectors for + and white heat shrink for ground. The heat shrink goes at each end of the connection, usually with a ptouch label denoting what it goes to/from with clear heat shrink over the top as well.
