I have a MARINE PILOT 1600 autohelm for my Hunter 22. The problem is I have no operating manual or instalation directions. I downloaded a similer Raymarine autohelm with no help. This unit has three dials, one labled off,set and 1 thru 4. the second on top has the compass heading. And the third in near the compass dial with a line and an R at one end and the other has a C. Any help please. steve. I can also be reached at 248-494-0825