My battery would be completely shot if my car sat for 3 days w/o being started. My tail lights would flash, ( w/ all of the lights off) like my hazards were on. When I swapped my hatch interior harness over to the coupe, come to find out, one of the wires running from the driver tail light to the fuse box, ( 18" before the fuse box actually) had burnt up...like through the plastic sheathing, causing my tail lights to flicker like hazards. After repairing the wire, my battery is now fine, along w/ the tail lights.