Try Mr Google for the brand you have. There are a few different diagrams, but they all seem to indicate that it doesn't matter. I tried to load a screenshot but it is too blurry.
You do not have the required permissions to view the files attached to this post.
Cheers
David
David and Terrie 2006 Winnebago Alpine Not all who wander are lost.
The Brake Switch for a Caravam is in effect a simple on / off switch.
The central pin gets pulled out and the internal contacts join, with the result of sending power from the active wire ( 12v ) down the nonactive wire to the van braking system.
Result= The van brakes are applied.
It would not matter which wire joins to which wire from the van as all it ever does is switch on the van brakes when and if the van becomes detached from the tug.
Ron
Much that passes as idealism is disguised hatred or disguised love of power.
Ignorance is Liberating
You're not restricted by facts or knowledge.
You're a Free Person and, as such, able to form your own conclusions.