The key thing to understand about right-wingers' thinking is that all their lives they are taught that morality and values are things that come from outside themselves. Anything you want to try to understand about right wingers comes back to this. A person's feelings and experiences have nothing whatever to do with what is right and wrong. Thus it's really quite impossible for someone stuck in a right-wing mentality to discern evil and good on her own; this determination has to come from some authority, and no matter how painful or miserable, she'll stay the authority's course because she believes she does not have the capacity to make moral decisions for herself.
And then there is the flip side of that thinking, the idea that there is no right and wrong, or that those ideas are not important.
I don't think there is usually a black-and-white difference between right and wrong, it is often a gray scale, but I do feel that when people listen to their inner moral compass and steer themselves towards what it says, they are happier and feel more connected to themselves and the world. I think that by listening to your compass, you can decide that there are some actions you'd consider right or wrong when faced with a morally difficult situation.
About a year ago, I was experiencing just such a struggle (I can't remember the details) regarding what to say to a friend about something that had to do with our friendship. One of the options was effectively lying to her or otherwise deceiving her by withholding the truth. I immediately ruled out that option, but I still couldn't decide what to do instead, and it was weighing on my mind, so I brought it to the therapist/counselor that I used to have.
So I told her about the situation and then started telling her what I thought about each of the "solutions" that I could imagine. I said, "Well, of course I can't lie to her, because that would be wrong." To which she responded, "I'm not very interested in what is 'right' and what is 'wrong'." I said, "NO. 'X' (a different friend) lied to ME in a similar way, and it really hurt me, it is WRONG."
I still don't understand how anyone could say that, especially someone in her line of work.