Hey guys, in my 1983 Mustang GLX convertible, the computer picked up on a faulty brake light and a light in the interior lit up to show me that it wasn't functioning properly. Once I was home, I put a brick on the brake pedal and looked at the lights. The right one was out but the left one was fine. So I opened the trunk and just pulled the break light out of the socket and it lit up again. The bulb looked a little hazy so I replaced it with the same, correct bulb. In fact, I replaced both brake lights. Also, a ground wire was unattached from it's post on a metal part of the trunk's interior post so I crimped it back and tightened it. Just to be sure this wouldn't happen again I sprayed the sockets with electrical contact cleaner. About two days later I hadn't noticed my warning light in the interior (it's a little red LED, kinda difficult to notice in the daylight) and my friend told me that he saw me, and that my left tail light was out. I made sure he was positive - it was the left light that was out, not the right light like before. I checked the wiring in the trunk, everything checked out okay; no loose wires, and when I wiggled the wires around the lights constantly stayed lit. Sometimes if I'm driving, I'll notice the LED tell me that a brake light is bad and then 10 minutes later it works fine; I know the LED is functioning properly. Sometimes both lights will randomly start working again. Right now there's nothing that I can do except see a professional but I want to make sure that before I do that, there isn't something that I can do to fix this. Any help would be appreciated, as this is pretty important, having brake lights that is... Thanks in advance guys!