hello I have an avic-d3 it was working fine till I installed XM satelite radio now the direction arrow keeps jumping around,and also at one point the arrow was going away from the direction I was heading hopping you can help me out here.... ummmmm also I clicked the button "modify current location" and it allowed me to point my arrow in the proper direction however it does not seem to keep the location it seems to always change for some reason...
jughead