What is this switch

[Davidmac]

Can anyone tell me what this switch works . My 2016 Jayco MV29 is on a ford E 450 chassis . Their is a switch over my out side mirror control on the drivers door that I have not figured out what it is for .

[TWP723]

For a heated mirror?

[Jopopsy]

Ah, now the question - which position is 'on'?

[dalebra]

O = off
I = on

[Jopopsy]

Now I wonder whether I've been driving with it 'on' for pretty much ever. Hrm., I shall have to pay attention to this when I get my rig out of service in a couple weeks.

[Davidmac]

Thank I suspected that might for the heated mirror , I was not able to test it . Now to mark it for off position so i remember to leave it off . Sorry for the turned picture , it was right when I look at it .


Dave

[CanucksVenturingSouth]

Originally Posted by dalebra

O = off
I = on

Thanks for this. I had no idea which was on or off either !!!!!

[jloco]

It's actually '1' and '0'.
The 1/O switch is part of the adaptation of the binary computer age. Computer code is made up of 1's and 0's. 1 being on, 0 being off as mentioned.

The evolution of the On/Off power switch symbol at Commonsense Design

[WaltW]

How about O for open circuit and I for closed circuit, the I indicating the line is connected.