I am trying to install a RAM 1000 auto on my Roo and the book I have is for the remote start version, what I need to know is what is connected to aux.1 and aux.2 also anyone out there have the correct book for this engine.

These inputs are not used. They were included for future expansion.

what about the pressure port on the front of the ECU, is it used ?

I thik it is for the speed control or cruse control if you use them...

The pressure port was for future expansion of speed/cruise control and automatic altitude compensation and is not currently used.