Had a lucky day, found a very nice heated leather interior for my 2nd gen ram.
Now its home, how to wire it up?

I got the connectors and the dash control, but nothing else.

truck currently had manual cloth seats.

you are going to have to conjur up a service manual or printout of the circuits involved I'd say briefly looking at it. First thing you'll have to figure out is "if" your current truck has the premium central timer module. From there I'd be looking at the under seat connectors and central timer connectors to see if the wiring harness is prepped for this option as well as the underhood junction block to see if there are even pins in the heated seat relay slot. Seat heat interface module is another item you'll need.

Thanks for the reply.

Thinking of ways to make it work by adding a power feed for the seat motors then tapping off that to control the seat heaters.

Seems silly to install aftermarket heaters when they are already there in the seats.

I have an electronic service manual that member "Grizzly" was kind enough to send me. If you want a copy, send me a PM with your email address and be happy to send you a copy.