Right I have heard about that law.
Just wanna play safe, does the following wire harness make the installation easier and safer ( safer in terms of warranty claims)? Seems like customers claimed they dont need to cut into OEM wiring this way.
I used that adapter to put 12v into my bed. You will need to change a couple of the wires to different wires in the adapter to get 12v and ground but you can use the longer wires from the harness and feed them up the post socket in the bed.
Just lay out the adapter and note the 12v and ground colored wires, Cut the long wires from the adapter and rejoin the shorter stub wires to complete the circuit for them. Then splice a longer wire on the 12v one and repeat with the ground wire. solder all wire and tape well.
Run the wires and you'll have 12v. in the bed. I used weatherproof connectors in a couple of spots and can remove the entire setup in less than a couple minutes.
We have these discussions all the time about the Moss-Magnuson act. Yes it protects you if you make changes. So--- what if they deny the claim just because they want to cheap out on you. Well--- You can get a lawyer, hope he knows what he's doing, and then pay him. Could you get made whole, probably but is it worth the trouble or would it just be easier to pull the adapter and move on.
To me it's a case on being "dead" right. No real upside as I quit fighting windmills years ago.
Your monkey, your circus - However.