The basic's to doing ambient swells is a delay and a reverb. To color it you can add other effects but in this video we will keep with the basic's
I'm running my franken strat with righteous sound pickups- buffered vp jr - Chase bliss tonal recall - Matthews Effects Astronomer - Benson Earhart
Set your feedbacks high and just roll the volume up after hitting your notes. Get lost in the waves.