I am having a similiar problem with my 92 coupe. Turn signal worked intermittently along with rear defog, and blower panel. Now the items are not working. Their was a smell of burnt electrical wire and found the smell/smoke coming from the rear reflector night lamps. Now, the battery is being drained by the problem as well. It was explained that the relay switch could be bad, or that the voltage regulator could have some problems. I was also told to make sure that the grounding is still correct. I plan to trouble shoot the problem over the weekend and will lwt you know what I come up with in a couple of days.