Intro:

G|-------------------|
D|7777555555---------|
A|----------77777777-|
E|-------------------|

Play this into the verse, except at :34 play (those are 11s btw)

G|--------------------------|
D|777555555/1111111111111111|
A|--------------------------|
E|--------------------------|

Play the intro during the chorus (I saw the liiiiiiiight), and during the second verse 
well, changing it to the thing above at 1:13

Intro during chorus again,
then theres that random bridge/break down thing:

G|-------------|
D|---555222555-|
A|777----------| X a lot
E|-------------|

then when she says "I saw the light" for the third time, go back to intro/verse