And I'd guess the passenger side is slightly lit with the key on and in park...
Mine weren't canbus - figured I'd live with "light out" while in reverse. Then discovered the glowing light when I left the car running with the wife inside while I ran in to pick up Pizza. Played with the 2w 100 ohm resistors (3 in a series) recommended and still no use. Hung a 25w ceramic on the passenger side and fixed the "glowing" LED. I had that one and called it good. Might get away with the 5w version.