uses the different colors for the DC wiring with white as the negative (-) for all applications and different colors black, red, and so on for the different (+) connections and it is labeled on their schematic. This makes it extremely easy to trace and test.
House wiring: White is light
and green is ground the world around and that translates to: You connect the white to the silver screw and the black to the darker (Brass) screw and the green to ground.
By code, house wiring must be identified by putting the appropriate tape on the ends. Black is phase 1; Red is the 2nd phase and so on.
You can purchase a set of colored electrical
tape to accomplish this. White, Black, Red, Blue, Yellow, Green and they are on small rolls (Check Harbor Freight)