An alternative would be to mount up a receptacle in the compartment it comes out of and a plug in on the severed piece.
If it doesn't come through a compartment perhaps an outdoor waterproof while in use receptacle would be called for.
If you wind up a bit too short for your needs you can always pick up a reasonably priced extension cord at Amazon and use it as a Hydro cord in conjuction with one of the above installed outlets.
2000 Roadtrek Chevy 200 Versatile
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