Yep. What Mike said.
It's dimmable with the instrument panel dimmer control.
That makes it not-so-useful if you like your panel lights dim.
I picked-up a handy LED Light (plus Laser) at my local CVS and clipped it (pen-style pocket clip) to the strap of the CD holder I have attached to the driver's side visor.
It's marketed by
"Helping Hand" (follow the link to the "faucet queen" website page that lists where to buy their products).
I couldn't find this product on the site, though. It's product number 20750.
Has a really nice LED light on a flexible "gooseneck", a red laser, and a magnetic base. It comes loaded with three watch batteries, and three spare batteries come with it in the package. All this for $3.99!
I've bought 5 of them so far (for friends), 'cause I use one at work and coworkers saw it sticking out of my shirt pocket.
I've used the one at work daily *for 3 months*, and the original batteries are still going strong. I use the Laser feature rarely.
If I find a pic online, I'll include it here.