Is it possible to add factory cruise control to a 91 Legacy L? I was pulling apart the dashboard and i noticed wires for the CC button. Is it a plug and play deal, or is it more involved than that.

 

What i mean is, are all the wires there? do i just need to get the button and the module?

You must take control module, motor unit with cables, cluch and brake pedal switches from donor car. At first compare wiring in donor car and yours.

I forgot to add, my car has an automatic transmission.

Yes, it should be plug and play, just make sure you get all the parts. Hit the junk yard and pull all.