1. Here's what you need for the restoration, in addition to the pancake housing and clamp: One Sylvania 4411 sealed beam, and one reproduction headlight gasket.
![Image](http://photos.cubfest.com/albums/userpics/10191/normal_lampandgasket.jpg)
2. Trim the rib off one edge of the gasket as shown here.
![Image](http://photos.cubfest.com/albums/userpics/10191/normal_trimmedgasket.jpg)
3. Remove some of the alignment key on the back of the lamp with a belt sander. Be sure to go slowly to avoid heat buildup or damaging the light.
![Image](http://photos.cubfest.com/albums/userpics/10191/normal_groundoffnub.jpg)
4. After removing the alignment key, wrap the bulb with the gasket, trimmed side in. Load the bulb into the housing, making sure it sits flat.
![Image](http://photos.cubfest.com/albums/userpics/10191/normal_bulbinhousing.jpg)
5. Install the clamp, adjusting the bulb position as necessary to obtain a proper fit.
![Image](http://photos.cubfest.com/albums/userpics/10191/normal_completeassembly.jpg)