I have an issue with the tail lights on the womans 93 supercoupe. The brake lights work, reverse is ok, blinkers are just, everything seems to work, however I cant seem to get the tail lights to stay on so she can drive at night. Seems like sometimes they will work, sometimes they flicker and most of the times they dont work. Something I noticed is there is a box in the trunk on the drivers side that clicks, and if the tail lights are flicking they match the clicks. What is that box, any suggestions for how to deal with it?
picture of the box
picture of the box