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need rocker switch illuminated while off

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Forum Name: Marine Electronics
Forum Discription: Boat Stereos, Security, Navigation, Lights, Switches, Gauges, etc.
Printed Date: October 21, 2021 at 9:38 AM

Topic: need rocker switch illuminated while off

Posted By: mikekomm
Subject: need rocker switch illuminated while off
Date Posted: April 02, 2014 at 7:22 PM


I am looking to find a simple on/off rocker switch that is either illuminated while in the on and off position, or only illuminated while in the off position.

I've found many rocker switches similar to the one below:

The problem with these is that they are too small for my mounting hole (.830" x 1.45") and they only illuminate while in the on position.

Where can I find a simple rocker switch that fits the mounting hole I have? Also, would the switch have to be specifically designed for illumination while in the off position or is this something that can be adjusted during installation (i.e., with a specific wiring configuration)?

Thank you!


Posted By: i am an idiot
Date Posted: April 02, 2014 at 9:33 PM
The only way I can come up with would be a Single Pole Double Throw rocker and a separate illumination source. When the switch is off for your device, it will provide power to the LED, or lamp. When the device is powered, the lamp will not be illuminated.

Posted By: oldspark
Date Posted: April 02, 2014 at 10:22 PM
Any switch where the LED or bulb is independent of the switch poles.

Posted By: mikekomm
Date Posted: April 03, 2014 at 11:54 AM
Thank you both very much for your help! Would there be any reason why I wouldn't be able to do this with a Single Pole, Single Throw with independent illumination instead of a Single Pole, Double Throw?

Posted By: oldspark
Date Posted: April 03, 2014 at 12:20 PM
If the LED/bulb is independent, then (obviously) you can do whatever you want with it.
You only need to remove one LED/bulb wires from the terminal.

Posted By: davep.
Date Posted: May 11, 2015 at 11:35 AM
Old Post, but I'll put this in, because I've seen this "light ON in the OFF position" come up before.

Many Illuminated SPST switches have 3 terminals:

B+, Output or Common, and GND for the LED. The output terminal is common to both the load, and the LED.
To have the LED ON with the switch OFF, connect as follows:

(Switch Terminal) = (Connect to)
B+ = LOAD, and Jumper to GND
Common = B+
GND = Jumper to LOAD.

With the switch in OFF, the LED will ground through LOAD. With switch in ON, the LED will have B+ on both sides, and will be OFF.

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