[AT] Power steering for small tractors

[charliehill]

Watching a hotrod show today I became aware that a lot of smaller cars these 
days use electric power steering assist.  There are also aftermarket units 
available for hotrods.  I'm wondering if that wouldn't be a good retrofit 
for some of old tractors.  It would require the tractor electrical system to 
be 12 volt and in good working shape but the units are small and could 
easily be added to the steering column on a lot of our tractors.

Has anyone tried it?  I'm sure some of the cars use sophisticated, computer 
controls on them but I suspect the aftermarket unit for hotrods and possibly 
some of the production stuff is just an electric motor version of an old 
hydraulic power assist box.

Any opinons or experiences?

Charlie Hill