"varnish" wrote in message
k...
I have just fitted a rudder sensor to a Raymarine ST4000 wheel pilot.
It hasn't made the slightest difference. I don't think the control unit
has 'seen' the new sensor. Is there a test procedure before I have to
bend myself double for an hour trying to remove it and send it back for
testing?

thanks

I think you may have to enter the "setup" mode on the ST4000 control head
and tell it a rudder sensor is attached. Should say something in the
manual.