Im new to the forum Not use how to even post in the right place. My first Ram diesel is a 2018 3.0 Laramie. It did not have a trial tow module. Trying to decide the best way to add it it in on my truck computer after installation is a zoo. I want to use an Apple Ipad pro and have a OBD MX plus but getting there next is confusing when it comes to selecting aps the right to use to get there. I really love this truck but it has a lot to learn to get it right. Bought a scanner and got a new fuel pump via Doge but am told I am out of luck to ever get a tone ring replaced since previous owner deleted def. Have a simple scanner to keep an eye on things, but i need to update when the tow module is in. I am still trying to decipher how to finish that. Ram make a serious mistake by ditching this truck instead re engineer the emissions issues.