basically if you use the 04-05 master engine system wiring diagram you use all the sensors listed. Sensors = upstream 02 sensoer, cam, crank, app, Elec Throttle Control motor, knock. Relays = asd relay, starter relay, fuel pump relay. These are some necessary ones. Might be a few more, but these are essential.

Try to find an 04 ram manual, it should be the same as 05. You need to have an idea where to start. Better yet email me at wldtm@hotmail.com I will try to see if I can send you the wiring diagram.

I did not use the auto trans from the truck in mine.