Well hopefully when youre done you can do a full write up for us with parts and whatnot. I definitely have to add this to ever growing mod list now lol

 

Ok the parts you will need are the two switches Left Switch Part # 4685728AB and Right Switch 4685729AB. You can get both switches off ebay for around $40. The harness you should get from a junk yard it will be alot cheaper that way the stealership will charge you around $150 from what I have read. A harness from a Ram 02-05 and a caravan 02-05 will work. all you need is the harness for the radio switches you might have to buy the steering wheel to get the harness unless you go to a pick a part yard. The steering wheel a bought cost me $25 bucks but that was for every thing.

If your truck is newer then 2005 then you have to add the wires and switches plus go to a dealership and have them do something not sure what but you can find the info and a full write up just google Steering wheel Radio Controls added with Pics. Its on dodge talk.com
After you read this that should answer any questions you may have.