How do you change a brake light bulb in a 1999 Volkswagen Beetle?

"if you need to replace your tail light bulb, first remove the cover (it's round) from the inside of your trunk, there will be a black knob that needs to be unscrewed totally to release the back light casing. Next, along the rear fenders where the lights are, there are two gaps. The inside gap (nearest hatch back door) is a release tab/clip on the light inside between the gaps. Insert a butter knife or something slim and pull out casing (don't be afraid, and it takes a little force to pull it out). After you pull out the casing, you'll find two light switches (one is for the turn signals and other is your break lights). Turn the light switch counter clockwise (assuming it's hanging upside down) and remove. Switch out light bulb with new one (autozone has them for about $4.00 - package of 2) replace every thing back as you uninstalled it. It's recommended to replace all bulbs, that way you don't have to do it again later when the other goes out. It'll save you lots of time and money. Hope this will help anyone so print and save in your manual for later use."

Before I go scratching up my rear quarter, I want a better idea of where these "GAPS" are to release the clips.