So working on my new project. 91 MJ. Speedometer doesn't work, put a new sensor in, still doesn't work. The MJ has a transmission out of a 04ish TJ, same with the transfer case (np231j), as far as I know. It's also got a dash out of a newer XJ, I doubt that really has anything to do with it since all the other gauges work just fine. I'm getting power to the sensor, just not getting a reading. Any advice?