Wiring color code?
I just replaced the vent fan in the bathroom of my Class C. The switch was wired to the green wire. I thought it was odd that the switch would be on the ground side, not the hot wire. Turns out the...
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RV wiring
1. Winnebago used GREEN for ground for years and BLACK for Positive. I believe they were the only ones and this was at the Coach battery connections. The interior appliances then had various colors for Positive. As a side note, this battery wiring caused problems 35 years ago. Winne started using Sears Diehard batteries as OEM coach batteries and expected the vast Sears network to handle battery warranty issues. Sears did for about a year. Then both Sears and Winne issued a bulletin that Sears would only work on Winne/Itasca batteries AFTER they were removed from the motorhome. It seems the Sears Technicians did not know about the color scheme for Winne--GREEN for Ground and BLACK for Positive. They replaced batteries and reversed connected them and the resulting melting and problems caused Sears money. So they stopped working on Sears Diehards in the Motorhomes.
2. Standard for almost all other RV makers is WHITE for Ground.
3. ALL other colors will be Positive.
4. To make it more confusing. Regardless of RV maker they use BLACK going to a Genset for Ground and RED for the positive.
5. Bottom line, you can NEVER be sure without using a voltmeter.
1. Winnebago used GREEN for ground for years and BLACK for Positive. I believe they were the only ones and this was at the Coach battery connections. The interior appliances then had various colors for Positive. As a side note, this battery wiring caused problems 35 years ago. Winne started using Sears Diehard batteries as OEM coach batteries and expected the vast Sears network to handle battery warranty issues. Sears did for about a year. Then both Sears and Winne issued a bulletin that Sears would only work on Winne/Itasca batteries AFTER they were removed from the motorhome. It seems the Sears Technicians did not know about the color scheme for Winne--GREEN for Ground and BLACK for Positive. They replaced batteries and reversed connected them and the resulting melting and problems caused Sears money. So they stopped working on Sears Diehards in the Motorhomes.
2. Standard for almost all other RV makers is WHITE for Ground.
3. ALL other colors will be Positive.
4. To make it more confusing. Regardless of RV maker they use BLACK going to a Genset for Ground and RED for the positive.
5. Bottom line, you can NEVER be sure without using a voltmeter.
