Mystery solved. As Kiltman and ST1100Y suggested, the major drain was from the GPS cradle. It pulls ~80mA, without the GPS in it! That surprised me.... 80mA in and 0mA out... I guess it's being converted to heat at the 12V to 5V converter. Also, my 1.94mA cradle measurement this morning was wrong, must have had a bad connection. Without the cradle connected, the bike pulls 1.46mA. And, as a side note, I'm getting a constant 14.05V from idle up to 3000 rpm. Thanks again for all the comments and suggestions.