Congrats, jack ! From the look on the forums there are many Goldwing riders from Florida. The manual is a nice addition to any ownership but it is not a prerequisite to install accessories. Accessories come with their own muddled instructions and the manual doesn't make them any clearer. That's what forums are for.
Tell your dealer to order the Honda service manual for you. That has always been one of the 1st "extras" I always ask for when buying a new bike.
While most accessories do come w/instructions, you will find several that refer you to the factory service manual to remove "things" in order to install the accessory.
Welcome Racer. Putting on your own farkles is a good way to get personal with your bike. Just be patient, lots of accessories require some dismantling of the tupperware etc. Cheers to you and your new ride.
p.s. love the new signature trike lady!
Welcome to the forum from another new member. I checked Helm Inc. and they don't yet have the new service manual. When I asked the dealer, he referred me to them and the owners manual also refers to them.