maybe this will help?
We have a in dash compass/temp system in our 02 Sig. It is called a "AccuTech" made by American Technology of Elkhart, IN. The manual for this unit says: "when the heading is flashing - check for a loose or bad connection in the compass sensor harness. See that the wires are snapped into the 3-pin housing securely, and check for a cut or broken wire in the harness."
I say go look for a broken wire or blow fuse where ever you were fixing your starting issue.
CURRENTLY MOTORHOMELESS!-Past MHs: 02 Monaco45'Sig,00Monaco43'Sig,99Monaco42'Exec,98Mona co42'Sig,98Newmar38'DSDP(pictured),88FW26'Jamboree .