Mystery Switch

Trooper

Any ideas on what this rocker switch controls? It is a lighted rocker switch located to the left of the Jensen radio above the refrigerator. I have not been able to figure out what it does.🤷

Horigan

Some folks install those to control power to the Jenson to eliminate the power draw when it's off. Does it control power to the Jenson or anything else nearby?

MuttonChops

That is most likely the Factory Installed 3-Way Fridge 12VDC Operation enable/disable Switch.

Some 3-Ways auto-select power source, switch allows owner to stop all 12VDC operation as the 3-Way Fridge has a huge DC current demand, keep it off use Fridge as ice chest save battery power.

Note: Most tow vehicle +12VDC 7-pin circuits don't provide enough current to fully run the Fridge, the extra demand is pulled from the battery.

Reference:

psuvtech

Yes, @MuttonChops is correct. If you want to run the fridge on 12v, you need to turn on that switch (green light should come on if I recall).