Just completed the install on my 2023 3500 mega. Slightly different process, but overall close enough. The upper seat belt mount needs to be removed to get the cover off. Held by a torx bolt. Be careful not to drop the 2 little screws that hold the upper panel and when you remove the coat hook, a little square plastic piece fell out and will need to be put back in.
In addition OBD JSCAN works for enabling the sales code. Now time to pair the sensors already installed in the trailer tires and paired to my 2021.
In addition OBD JSCAN works for enabling the sales code. Now time to pair the sensors already installed in the trailer tires and paired to my 2021.