Finally fixed my turn signals…. It only took 3 years lol. Ok well luckily my 88 GT wasn’t my daily driver but it did start to get stressful on why the turn signals didn’t work. It went from it flashing slow, to barely flashing to fading out to working to nothing happening at all. The whole time my Hazard lights worked like they were new. Here is what I replaced…..
4 Bulbs, both flashers, 4-way (behind fuse panel) and turn signal (behind radio), New Multi-Function switch, new Ignition...

If your turn signals don’t work on your 87-93 please read……