I have a 94 gt and both my odometer and speedometer stopped working. My speedometer was already off by around 10mph and then one day they both just stopped. I took out the old radio and I can't say for sure it stopped working that day idk even know if that has anything to do with it. I replaced both the speed sensor and the speedo gear and still no dice. I am planning on ordering the worm gear but before I do that I was wondering If there is another part that might be causing this.