Does anyone know of any control links ?

Gunrunner,
Could you please expand on your topic?
I think I know what you are talking about,
Industrial Controls and related equipment.
Try www.rockwell-automation.com www.allen-bradley.com
Should give you some insight, but I require a more concise idea of what you are after.

The rockwell automation link is no good. The allen-bradley link is actually Rockwell too, since it's the same company. That site is great, lots of good info. Check out the "Manuals Online" section on the left menu. Lots of good reference material, diagrams, etc.

are you looking for anything in particular?