how to make a12 volt switch lit in off postion
on my main switch panel by the door i have a ceiling light switch that i would like to be lit in off position , so when you enter the trailer at night you can easly find the switch. thanks
Forum Discussion
While it could be done by simply adding a small 12V bulb or LED across the switch terminals it in general might be a bad thing to do..
The switch when closed (ON) shorts out the bulb or LED and allows max current to flow through the light fixture bulb but no current to flow through the LED or small bulb at the switch.
The switch opened (OFF) allows current to flow through the LED or small bulb at the switch. At the same time the same amount of current will flow through the light fixture bulb but since it is so small of a current the fixture bulb does not light (LED fixtures "might" however glow dimly).
However having even a LED or small light bulb burning all the time when the light switch is in the Off position will draw down your battery in short order. This is often an issue when boondocking (no commercial power camping) or if you are storing your camper without commercial power.
I would simply recommend a small LED flashlight if you are boondocking or even one of those fake flickering LED tea candles that you could leave on when you are going out for the evening.
If you are camping with shore power then just by a small LED night light and place it in an outlet near the switch..
The switch when closed (ON) shorts out the bulb or LED and allows max current to flow through the light fixture bulb but no current to flow through the LED or small bulb at the switch.
The switch opened (OFF) allows current to flow through the LED or small bulb at the switch. At the same time the same amount of current will flow through the light fixture bulb but since it is so small of a current the fixture bulb does not light (LED fixtures "might" however glow dimly).
However having even a LED or small light bulb burning all the time when the light switch is in the Off position will draw down your battery in short order. This is often an issue when boondocking (no commercial power camping) or if you are storing your camper without commercial power.
I would simply recommend a small LED flashlight if you are boondocking or even one of those fake flickering LED tea candles that you could leave on when you are going out for the evening.
If you are camping with shore power then just by a small LED night light and place it in an outlet near the switch..
