I haven't looked at your video so I won't comment on your mod but since you mentioned Furrion I have a little story. Last summer we happened to be passing near a Camping World so I dropped in hoping to buy a Marinco 30 amp twist lock female connector, the same one that is supplied with their
Park Power Conversion Kit which I've been using for years on several trailers we've owned. All they had in stock was the
Furrion 30 amp Retrofit Connector so I bought it anyway, thinking it was about the same as the Marinco. Typically, it was a sealed package so I couldn't really get a good look at it until I got it home and removed it from the packaging, only to realize it just wasn't quite as heavy duty as the Marinco. I built my cable with it anyway but then realized the Furrion locking ring is finely threaded so it not only takes many, many turns to lock it in place but it can also easily cross thread - the Marinco has no threads, just tabs, so securing it in place takes a mere twist of the hand and it's done. The Furrion is now sitting in my workshop looking for another home. :(