If the autopilot is shaky, the linkage rod might be binding or too loose.
After physical installation, perform an "Auto Source Select" in the network settings of your Simrad MFD simrad rf300 installation manual
Once the physical and electrical installations are complete, you must configure the system using your Simrad control head (e.g., AP44, AP48, or integrated NSS/NSX/NSO multi-function displays). Turn on your marine electronics network. If the autopilot is shaky, the linkage rod
Inspect the blue and brown wires for breaks, corrosion, or short circuits. If the autopilot is shaky