I Have a 92 yota 4x4 reg cab 22RE pickup and my speedo works when it wants to. I changed out the sensor and instrument cluster and all worked well for a few months then all of the sudden my speedo is at 0 but odometer is woking. Then after driving for a while the speedo will bounce and either start working or it'll stay on 0. I kinda feel it's a electrical problem but not sure. What could it be??? Any help would be appreciated.