check the back of the under dash fuse box. apparently, the sunroof drain on the a-pillar can back up causing massive corrosion and shorts across unrelated systems (info from a dealer friend of mine based in NY).
1992 Legend LS Sedan, Granada Black on Black
2005 CR-V EX AWD AT (Japan build), Nighthawk Black on Black
2013 ILX Premium, Brownstone Metallic on Ivory