Can anyone tell me what this is supposed to connect to?

Like the title says I was hooking up some lights and popped one of the blank switches off and something is already stubbed in. So basically wondering what connection it is. Thanks.

 

Switch connector for the 110 inverter.

 

So I have a SR5 base does that mean I have an inverter somewhere? Or is it just wired in if I want to add later. I don’t have the outlet in my bed.

 

The cab is prewired, but buying all the OEM inverter components is waaaaaaaaay expensive for a measly 400 watts.

 

Oh I know lol I was wondering if they had the inverter somewhere but I doubted it. My RAV4 is the same way with random plugs behind the dash. If I’m spending money on an inverter then I’ll get a Pure sine wave. Thanks for the help!