Some of you guys probably have heard of this problem before with speedo not working and millage not being read at all. But I wanted to add in my situation, when we found the plug connecting to the gearbox sensor. We tried to connect it back and it blew a fuse and the car couldn't start at all. For now we left the gearbox sensor unplugged and replaced the fuse but I was wondering what could've resulted in the blown fuse and if possible, is there anyone selling a brand new or at the very least a used gearbox sensor.