I just happened to test mine yesterday because my battery kept draining down. I was getting I think an amp of current draw when off. I figured out the relay for my heated windshield was bad. Once I pulled the relay I got somewhere right around 35 milliamps of draw, looks like that's normal.

I also bought a "settings keeper" yesterday that you plug into the cigarette lighter which allows you to not lose the computer settings when unplugging the battery. I've only used it once but it seems like it did not work since the odometer was reset to zero after I was done with it. I guess I'll have to try it again.