I see that others have shown you the drawing.
Suggestion: DO you have the standard wall plate 12 volt outlet. light. switch antenna connection?????
Replace it with a Sensar Pro.
Now I can pre-aim with the Winegard aiming app but .. Well I need to know where both TRUE and Magnetic NORTH are (I'm good at that) but
Turn on the Sensar Pro. if not on the first ON option keep pushing top button till it shuts off and back on. Turn for biggest number on top window.. DONE.
In some cases I will manually force a carrier channel (Push top button 2 more then use bottom UP/DOWN buttons to select) and peak. depends on where I am.
Example the other MI Campground I stay in peak on 12 and 1-2 notches clockwise.