The 12 volt system is powered by a battery or in some cases multiple batteries and it powers things such as the start up on your water heater furnace and refrigerator plus most of the lights in your rv s living space your water pump your carbon.
Rv interior lights not working.
I recommend that you ask yourself.
Rv owners take pride in the interior of their motorhomes.
Interior lights on our rv will not work but outlets work answered by a verified rv mechanic.
If your lights are still not working it may be that there is no power to the light fixtures.
In an rv the interior lights the temperature control panel the 2 way fridge control panel and your alarms all run on your 12 vdc coach battery.
A 12 volt dc electrical system and a 120 volt ac system.
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This battery must be kept charged for this equipment to operate properly.
One rv two electrical systems.
Switching various lights or the refrigerator off would silence the alarm but when turned back on the alarm would sound again.
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The first thing we checked was that the switch was on.
We assume the lights in the hall and bathroom are running off of 12 volt and that other lights in the rv are working fine.
Everything was working fine a c on interior lights refrigerator and small tv when the fault indicator on the co detector began chirping and then steadily alarming.
For instance the light fixture above our sofa has a switch near the steps this is also where our 12v on off switch is located.
Your rv has two separate electrical systems.
What to do if some of your rv 12v lights stop working one of our rv 12v light fixtures stopped working the other day and we were unsure if it was the fixtur.
Decorate the interior of your rv with decorative interior lighting fixtures including art deco style fixtures and classic brass wall lights.
Some light fixtures within an rv can have switches located on a control panel.
Your symptoms make me think that your 12 vdc battery s are not properly charged.