Standard Tuning (EADGBe) I found this out by watching Tom Petty and Stevie Nicks performance of this song on youtube. It may not be 100% right, but it sounds alright playing along to the track. Verse 1:

You got a ^Gdangerous ^Dback^Cadd9ground In e^Gverything you d^Dreamed ^Cadd9of Yeah, y^Gou're the ^Ddark a^Cadd9ngel It don't ^Gshow when you ^Dbreak u^Cadd9p

Pre-Chorus 1:

But ^EmI'm the one who ^Doughtta ^Cadd9know Yeah ^EmI'm the one left ^Din the ^Cadd9dust ^DI'm the broken hearted fool ^DWho was never quite enough

Chorus:

^GI'm an ^Dins^Cadd9ider I been ^Gburned by the ^Dfir^Cadd9e Oh and ^EmI've had to live with some ^Amhard promises ^DI've crawled through the briars, ^DI'm an in^Gsider

Verse 2:

It's a ^Gcircle of ^Ddecep^Cadd9tion It's a^G hall of ^Dstran^Cadd9gers Yeah, ^Git's a cage with^Dout a ^Cadd9key You can ^Gfeel the ^Ddan^Cadd9ger

Pre-Chorus 2:

But I^Em'm the one who ^Doughtta ^Cadd9know ^EmI'm the one you ^Dcouldn’^Cadd9t trust ^DI'm the lonely silent one ^DI'm the one left in the dust

Chorus:

^GI'm an ^Dins^Cadd9ider I been ^Gburned by the ^Dfir^Cadd9e Oh and ^EmI've had to live with some ^Amhard promises ^DI've crawled through the briars, ^DI'm an in^Gsider

^AmWhoa - ^Doh ^G ^AmWhoa - ^Doh ^G ^D

Verse 3:

I bet ^Gyou're his ^Dmaster^Cadd9piece Oh, I ^Gbet you're his^D self-^Cadd9control Yeah, ^Gyou'll become his ^Dlega^Cadd9cy In his ^Gquiet world of ^Dwhite and ^Cadd9gold

Pre-Chorus 3:

Oh, but ^EmI'm the one who ^Doughtta ^Cadd9know ^EmI'm the one you ^Dleft to r^Cadd9ust ^DNot one of your twisted friends ^DI'm the one you couldn't love

Chorus:

^CI'm an in^Dsid^Ger I been b^Amurned by the ^Dfir^Ge ^EmOh and I've had to live with some ^Amhard promises ^DI've crawled through the briars, ^DI'm an in^Gsider ^AmI'm an ins^Did^Ger

Tom Petty and the Heartbreakers - Insider