What I think you are stating is that you currently have the B&W Companion 5th Wheel Trailer Hitch, # BWRVK3500-5W that mounts to the above bed ISR rails. And you are asking about fitting it into a new tow vehicle, a later model Ford Super Duty that has the OEM puck system. If I am following correctly, yes you can swap the hitch head out to be placed into the Replacement Base for B&W Companion OEM 5th Wheel Trailer Hitch for Ford Super Duty, # BWRVB3300 and this will drop directly into... view full answer...
The Optronics LED Trailer License-Plate Light # LPL55CB that you referenced is not a submersible light. We do offer other tag lights with brackets but none are both LED-types and submersible. We also offer submersible lights with incandescent bulbs but without the plate bracket.
The link provided will show you the three submersible license plate lights we offer. view full answer...