What is a "Grabber Switch" ?

[oldmansax]

I don't know what this is, so I don't know where to put the question!

I am is the process of replacing a lot of the original water piping with pex. In the process, I have discovered two metal octagonal electrical boxes with covers. "Grabber Switch" is written on each cover. I haven't checked yet but the wiring looks like 12 Volt. My coach has twin beds and there is one box each under each bed, mounted to the wall. It appears there are two wires with two conductors each in each box. One wire goes towards the front of the coach and one disappears into the sidewall.

On a maybe related note, I have two weather proof toggle switches, one each under the rear most side window (bedroom). Don't know what they are for & the PO didn't know either. Are they the "Grabber Switches"? What would they grab? If I turn one on, will I be grabbed & stuffed into the engine compartment?

Any information or opinions are welcome.

TOM