Depends on what your wagner drive uses for power. If it has a 12v motor
which reverses the polarity to go left and right, its easy to hook up one of the simrad
or coursemaster units--just make sure they have the amperage capacity to handle your motor
. There is also a 12v output for a solenoid valve bypass valve or clutch
. If your wagner is the type that has a continuously running motor and opens valves to go left or right, its doable, but not as common. some of these systems can run at 24v if needed.
The modern brains are a lot smarter, automatically adapt to sea states, have lower power consumption
, and have remotes.