Breakaway switch

[martin redman]

I inadvertantly pulled one of the breakaway wires out of the j box, but looking into the box it is not obvious which one of the connectors is the correct one to plug into.
The wire is a black/white.

[Huck]

The switch should be wired between the battery(always hot wire) and the brakes(probably blue).

[martin redman]

Thanks. I was passing Camping World and stopped in to plead my 'dumbness'. They are very kind, a young guy stepped our to my 5th wheel and fixed it in less than 5 minutes.
No charge. I will go back again, at those rates, I can't affoerd not to.
Spent a few days in the rain at Cape Disappointment, beautiful.