Took my 91 in to get inspected today. The inspector came back and told me that my interior blinkers weren't working despite them functioning on the outside of the car. Said he had to bump the key to get them to work. I had heard about the late 80's early 90's Fords having problems with switches causing fires. Even though I hadn't seen this before I went ahead and stopped by the parts store on my way home to pick up a switch. Whilst driving home the blinkers stopped working on me, first time I'd ever seen it. Got home and pulled it apart to find this: The plug was a little warped from heat and you could tell the switch has been getting hot. Glad I got this done before it burned my garage down with all my rides in it. As a bonus the key cylinder isn't all loose like it was before and my charge voltage is now higher on the gauge.