Well here is how I play "Neon" by John Mayer. Not the way I play it on electric.
I mainly play this on acoustic. But it can be played on electric this way. I'm
almost positive this is 100% right, then again I oculd be wrong. Either way enjoy!

"Neon"

tuning... drop low E waaaay down to a C


(PART I)

e---------------------------------------------------------
b----8-------------4--------------4-----------9-------8---
g------10--------3--------------3---3--------8-------7----
d--------------3------5-6-----6-------------8------10-----
a---------------------------------------------------------
c--0---------3---------------5------------8------10-------


(PART II)

e-----------------
b---6----6----4---
g---5----5----3---
d---8----8----6---
a-----------------
c---8----7----6---


(PART III)

e-----------------------------------
b---6---6---4---6---6---4---6---4---
g---5---5---3---5---5---3---5---5---
d---8---8---6---8---8---6---8---6---
a-----------------------------------
c---8---7---6---8---7---5---7-------


(PART IV)

e-------------------- 
b---4---6---4----4--- 
g---3---5---3----3--- 
d---6---8---5--3h5--- (2x)
a--------------------
c---5---7---0--------


(PART V)

e------------------------
b---4---6---4---11---9---
g---3---5---3---10---8---
d---6---8---5---10---8---
a------------------------
c---5---7---0---10---8---


(PART VI)

e---------------
b---4-4-----4-4-
g---5-5----5-5--
d---6-6---6-----
a---------------
c---------------


(PART VII)

e--------------- ---------------------------
b---6---6---4--- ---6---6---4---6---9---11--
g---5---5---3--- ---5---5---3---5---8---10--
d---8---8---6--- ---8---8---6---8---8---10--
a--------------- ---------------------------
c---8---7---6--- ---8---7---5---7---8---10--


(PART VIII)

e------------------ ------------
b--4---6---7----9-- ------------
g--5---7---8---10-- ---11--11/--
d--6---8---9---11-- ---11--11/--
a------------------ ------------
c--5---7---8---10-- --------10--


(PART IX)

e-----------------------------------
b-----------------------------------
g-----8---------8--------------8----
d-------------8-------------10------ (repeat)
a------------------(0)--------------
c---0-----0h7-----------0h10--------


(I)
When sky blue gets dark enough
To see the colors of the city lights
A trail of ruby red and diamond white
Hits her like a sunrise

(II)
She comes and goes and comes and goes
Like no one can

(I)
Tonight she's out to lose herself
And find a high on Peachtree Street
From mixed drinks to techno beats it's always
Heavy into everything

(III)
She comes and goes and comes and goes
Like no one can
She comes and goes and no one knows
She's slipping through my hands

(IV)
She's always buzzing just like
Neon, neon
Neon, neon
(V)
Who knows how long, how long, how long
(VI)
She can go before she burns away

(I)
I can't be her angel now
You know it's not my place to hold her down
And it's hard for me to take a stand
When I would take her anyway I can

(VII)
She comes and goes and comes and goes
Like no one can
She comes and goes and no one knows
She's slipping through my hands

(IV)
She's always buzzing just like
Neon, neon
Neon, neon
(V)
Who knows how long, how long, how long
(VI)
She can go before she burns away

-then parts VIII and IX


There ya go! I included the lyrics as well as what parts to play where.
So i hope you have as much fun playin the song as I do!