The 1500 switches can’t be made to work on the HD Rams, they use a completely different message system through the steering control module.
The 1500 wheel splines are different, and the metal frame of the wheel needs to be cut up to fit. More info from someone else that tried this in this thread link:
I am in the middle of this swap (2021 to 2022) right now! It’s not easy! Pictures are coming but here is what I have found and done so far!
I recently bought a 2021 Ram. Coming from too many Toyotas to mention! Thinking it was just a bolt on, I bought a 2022 steering wheel because I wanted leather, and I liked the layout of the up and down button! After purchasing the 2022 wheel, I discovered that the 2021 did NOT have volume control buttons in it! What was Ram thinking!! Luckily I discovered that the 2022 had volume controls built in, an added bonus that I didn’t even know about! On the...