Aftermarket Breakaway Switch

[uniquemicro]

I was told my '75 Argosy did not come with the breakaway switch but Virginia law requires it. How do I wire an aftermarket switch? (I found one new for $10)

[overlander63]

It's pretty easy. Hook one wire from the breakaway switch to the battery charge lead (black wire). Hook the other wire from the breakaway switch to the brake control wire (blue).

[Lumatic]

Do you have a tongue jack? That vintage Airstream has the breakaway wired or the tongue jack leads. On a 75 your trailer brake wire may be yellow.