To enable remote start my 2021 1500 Classic SLT I had to add the hood latch (wiring was present) and a key fob insert. The key fob already had the button, and just needed this insert:
https://www.amazon.com/gp/product/B07HKXBVH7/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Once I had both of those, I enabled remote start with AlfaOBD and it worked.
If you need the wiring I think
@DoughRat19 may have a kit for it, or I'm sure he'd know what to get if he doesn't have it. EDIT: To be clear: This is not an OEM part your dad will be able to order from Dodge. Watch DoughRat19's videos (linked above), figure out which wiring is needed, and then let him know. I was lucky and needed no wiring.