So in the case, that you do say it's a bulb then this is easy..
Hmm... Globes... So many options...
Well, you can do a search for lot's of different topics on the different bulbs that people have tried, and what they think of them...
Also, I personally woundn't recommend putting stronger wattage bulbs in as you never know what will happen, ie too hot etc,
However, thing is, typically the more you spend the better they are... let me give you an example, these are for your normal lights, just as an example,
http://cgi.ebay.com/ebaymotors/ws/eBayI ... ename=WDVW (These are probably the best globes )
These use 55W, but they give out more, like instead of 55W, 100W, now another thing to consider, is the temperature that they glow at, which is measured in Kelvin... anyway, these are 7500K which is, probably the highest I have ever seen on a standard bulb like this.
Keep in mind, that cheaper alternatives, that are lower Price & Kelvin try to mimic this "blue" look, but putting blue filters on, this just simply reduces the brightness of them. The blue comes out naturally when you have very high Kelvin... and most of the time doesn't quite look right...
I wount bore you with more...
Just visit any decent car shop for globes... Good Luck