In general, these are the color codes used in the industry. As others have stated your coach may differ, so always check with your meter before adding or troubleshooting anything.
The chassis wiring is per manufacturer, always check with them for a diagram. Mostly they mark wires with a number and all the wires may even be the same color.
If you have a Gasser: Ford, Chevy, Dodge etc. then they use wires with colored stripes and such. Only a diagram will make any sense for these.
12 volts, DC
red: positive
black: negative
120 volts, AC
black: positive
white: neutral
green or bare: ground
120/240 volts combination, AC two phase (so called 50AMP shore power)
black: positive
red: positive
white: neutral
green or bare: ground
240 volts and higher, AC, single phase (rare in a RV)
black: positive
white: positive
green or bare: ground
240 volts and higher, AC, 3 phase (even rarer in a RV)
black: positive
white: positive
red: positive
green or bare: ground
12 volts, DC, trailer highway light, brake and battery charge system
white: ground
brown: tail
green: right stop/turn
yellow: left stop/turn
blue: brake feed
red: 12vdc+ battery charge
black: accessory, not usually used, can be used for backup lights
Dick
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1999 Tradewinds 7372 Cat 3126
Albuquerque, NM
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