My Raymarine rudder position sensor resistor is shot. It needs a new internal resistor.
From red to blue is 5000 ohms, from red to green is variable linear 1500 to 3500 ohms
From Green to blue is also variable linear 1500 to 3500 ohms.
I hooked up a test rig that simulated these values from resistors I bought at an electronic store. It worked fine. If I put another resistor from red to blue it showed the rudder position on the display, I also changed the resistor green to blue and the rudder displayed full scale in the other direction.
I have been doing Google searches for days looking for a pot of this type with no luck.