Good question, however, more information would be helpful. Is this question based on a real life situation? If so were your forced to park on a hill (i.e. Some kind of emergency situation), were you unhitched? How big a hill? I'm guessing if you are wondering about pulling the break away switch you are unhitched?
For whatever this comment is worth: We've never parked, hitched or unhitched, on a hill.
Trailer: "The Trailer", 2nd Gen 21' & a 2017 Tundra CrewMax in Blazing Blue Pearl
Posts: 2,888
If you're thinking of pulling the breakaway cord, I'd suggest getting some extra plastic pin bits for it. Least that was the suggestion my instructor gave me for when I test ours. that way, if it breaks, I have a replacement piece as otherwise it won't work.
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Laura, Dirk and Sam & Jasper (the cats) www.UnderKittySupervision.com
2017 21' trailer, new mold, rec'd 11/25/16
The breakaway switch is designed as an emergency device. It puts the trailer's 12V battery (assuming you are disconnected from the tow vehicle) directly on the brake magnet coils, drawing 3-4 amps per brake continuously. This will overheat the coils in the brakes & quickly drain your batteries.
Use your chocks, or leave the trailer connected to the tow vehicle.
My trailer is parked on a hill all the time, my driveway. I just use wedge chocks, and X-chocks and have never had a problem.
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2017 Escape 5.0 TA
2015 Ford F150 Lariat 3.5L EcoBoost
2009 Escape 19 (previous)
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