[TartanJack]

It is a very good vehicle, period.  The stock reverse light is pretty bright on its own.  My main issue is that A LOT of people don't seem to see it and whip behind me AS I am reversing . . .
The Rumion (the Japanese parallel to the xB-> mostly same body and parts) also has taillight housing mounted reverse lights:
http://www.japanesesportcars.com/galleries/data/media/224/toyota_corolla_RUMION.jpg

If Yung gets the search working . . .
There are posts on here where people have wired those onto 08-10 xBs.  So, it is VERY doable.  The 11s should wire in too.  The housing is a different shape, but don't remember if it is bigger or smaller (the Rumion's is SLIGHTLY smaller on the bottom).
If you can, get the lights and bumper off a wrecked or modded 11 model and it will all fit flush. 
Who knows . . .
You may even find someone who wants to swap (more possible than you'd think- a number of people have already commented on mixing front and rears between the 2 versions of the vehicle) and be able to simply swap the lights and bumper one-for-one.  W/ some planning, even the light connectors might could be swapped too . . .
I'd look into the local Scion clubs and see if someone is interested.
(I am fond of Scikotics . . . a member even . . . its members are of a HUGE age range)

Someone should be able to post up and guide you w/ one they have modded.

 

[TartanJack]

My OWN reverse light is staying . . . I like it that way.
(Was addressing the intent of the Dale's first post)

Yet, I wish people would SEE that lamp and quit cutting behind me!  Someone already cut it too close and cost me my first bumper cover (and the whole side of their own Ford Focus).  I was WAY out of the spot and moving . . .
I seriously think people are oblivious.

The stock one is PLENTY bright for practical use!

 

[TartanJack]

Where the single light came from:

That is Scion T2B, the concept that foreshadowed the xB2's styling.
It was from March 2005 (That is 200FIVE!), so the Gen2 was already being developed about the same time they started selling the Gen1.
It was unveiled at the New York Auto Show, 2005.

More shots, from Scion:
http://pressroom.toyota.com/pr/tms/scion/photo.aspx?id=13520&ncid=12047

 

[TartanJack]

I love the single reverse light too, and it's one of the reasons I bought a 2010 over a 2011.

I'm thinking of putting a reverse beeper on mine. I don't know if that'll make anyone pay any more attention or not, but I just think it'll be cute, and will add to the "panel truck" aspect of the xB. Plus I already have the beeper, so yay for free mods.

I'm another old guy who bought the car largely because it's easy to get in and out of. Climbing in and out of the Tacoma I had before was a chore. Plus I like weird things.

I was thinking of getting the same thing . . .
But wasn't sure how to wire it up.

 

[TartanJack]

I had one of these years ago on another car--it just tapped into the brake light so when the light came on the beeper went off. It annoyed the hell out of my spouse (x).

I'm gonna see how big those are tomorrow . . .
If not too big and cheap enough, I'll get one as a "stop-gap" to see if I like it or it annoys me after the "gimmickness" wears off. I'd rather not spend a chunk and tap into the wiring harness just to take it off again in a week or 2.

 

[TartanJack]

Dale, . . .
It seems your comment/statement/reply was missing from the last post. You should be able to edit it back in. If not, PM it to me and I'll put it in for you.


As for the beeper . . .
I think I'll get the beeper, just need to figure out my preferred pitch and volume. I'll add a "cut out" switch to its wiring and mount that under the back w/ the beeper box. That way, I can turn it off or on when I feel like.

Thanks for the idea!

 

[TartanJack]

The Hella ones can be bought through O'Reilly's Auto Parts:
http://www.oreillyauto.com/site/c/detail/HLA0/009148001.oap?keyword=back-up+alarms+&+cameras

One is down the street from me.

 

[TartanJack]

I ordered a $10 one from Amazon (shipped price) . . .
I'll see how that one works and how annoying it is (pro AND con). If weak and I LOVE it, then I'll get a better quality one.

 

[TartanJack]

Think Air Horns for your next mod.

Got em in the Miata . . . the twin electric Fiamm ones (from an auto store).

I'll need to decide what I want horn-wise in the xB.  Whatever I do WILL be visible through the grill and they are already wired for twin horns, but are off-set funny.  Decisions, decisions, decisions . . .