1970 Duster steering column

Let start buy saying that I did not take my car apart nor the steering column out and I am about to install my steering column in my car but would like to know if I should install the wiring under dash first and if there are any special nuts bolts or other Items or installation steps I will need or know to do this task. I see that I will have to replace the 3 white plastic bushing that are broke. Does anyone know were I can purchase these items? also do I have to make sure that steering wheel is lined up first or can that be adjusted later, its not parallel right now looks like I am turning to turning to the right and the front tires are straight!