Exterior Light out.

[Beau M]

So I unhooked the battery to do a stereo install, and now when I turn on the parking lights I get the dashboard idiot light telling me one is out. I have done a complete walk around with my girlfriend, everything seems to be in order. Blinkers, Brakes, reverse, licenceplate, everything. Any ideas?

[Denlasoul]

Check to see if one of your bulb connections are bad, they still seem to work Mine light out indicator used to come on and off until I replaced my bulb.

[SLAMMED_C]

yeh.. the bulb filament can be loose so one second it loses contact and sets the light malfunction on.. but when ya go to look, they are all good.. the filament makes contact again and may fuse itself back together temporarily.. the malfunction light stays on until you cycle the key.
then the malfunction light goes out again and things are good.. just check all the lights.. pull the bulbs out and give them a light tap.. if may knock the filament lose and you will know which one is faulty.