Here's how to light up the "Intercooled Turbo" that's in your cluster.
1.) After removing the cluster from the car locate the area where arrow points in this picture. You'll notice that most of it is black but there is a long orange section. That orange section is the "intercooled" part. If you don't want the "Intercooled" to light up then put a piece of tape over it to avoid it. Also, right above the section you'll notice a missing bulb. You'll need to get an extra bulb to put in that empty spot.
(http://fp.enter.net/~nicolette/images/turboGP/gauge1.jpg)
2.) Use 400 grit or finer wet sandpaper(or paint thinner). Then, wet the sandpaper and start to sand away the lower part of the orange and the black section directly below the orange. Once you see the white start to show through either section stop and plug it in and turn on your lights to check your progress. Proceed cautiously and sand away more until it your happy with the results. Don't worry if there are some small black spots as you won't notice them when it's all said and done. This is what it should look like when you're done.
(http://fp.enter.net/~nicolette/images/turboGP/gauge2.jpg)
3.) After you're done sanding the cluster, reinstall it and turn on the lights. It should look something like this.
(http://fp.enter.net/~nicolette/images/turboGP/gauge3.jpg)
***NOTE: to some it maybe to bright as it can really stand out against the rest of the gauges. You can put a small piece of window tint over it to dim it down.