In this song Larry uses often the volume pedal.
For harmonics, Larry taps (I don't know exactly how 
he plays that!!!) 12 frets higher (exept one 
time at the end but it's specified) or he plays that like a 
natural harmonic, a very light attack with the pick 
between the thumb and the middle finger, and you play 
the natural harmonic with the index finger . It's hard to 
sound like him but it's a very good exercise to work 
your "touch".

I hope you will enjoy this tab ;-)