lurlette wrote: 1: where can i get a wireing diagram for 2011 rogue,and if their is anything as a step by step guide for same.
http://www.nicoclub.com/FSM/Rogue/2011/
We don't have any step-by-step guides for Remote Start systems. Most owners elect to have a shop install the system for them.
2: can i use the same power and acc wire to connect to the remotestart and lcd screen.
The remote start system install is very involved and requires connection to several wires, not just ACC. The Rogue also features an anti-theft key system so you need a bypass box for it. IMHO, I would get a shop to install this for you. An improperly done install could result in your vehicle not starting.
3: when i am doing the install do i have to disconnect the battery terminal.(some people seems to think that doing this will interfare with the Air bag and computer system )
Absolutely disconnect the battery!
4: What`s the best way to connect the wires with out having to cut them.
You can get special wire splices that do not require any cutting. Nissan uses Posi-Taps for accessory installations:
http://www.posi-lock.com/posiplug.html