I don't have the tab, but know the line well,
here's Forbes & co. playing it back in 1982;
[url="http://www.youtube.com/watch?v=mubFaGE93Dk"]http://www.youtube.com/watch?v=mubFaGE93Dk[/url]
(6 songs from that Live in newcastle gig are on the Seen the lights double DVD)
the intro riff at the 10th fret of the G and D strings is played an octave lower for the verse (on the D and A strings),
and on the last bars pauses on the C and D,
before going into the chorus, Bb, A, C, D
in the choruses he also plays a D harmonic over the 5fret of the D string.