Can I Check For Heated Steering Wheel and Heated Seats?

[Crop Duster]

I have a 2021 Ram 5500 SLT that is an RV. This particular year the RV manufacturer had cabs with both heated seats and heated steering wheel as well as without it. I don't know if Ram didn't have electrical components for those systems or why they did not all come with or without it. It seemed to be a change in the middle of 2021 years. I'm wondering if I can check the steering wheel and seats to see if I have plugs for these items to work. I'm wondering what I would need to look for in order to tell if the heating elements are there and if I'm just missing some wiring. I doubt that's the case but thought I would start with the simplest stuff before going further into it. Thank you

 

[flan]

The truck side wire harness may be there but there will be no heating elements in the seats or wheel.