Tail light to tail light bracket gasket
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Moto Guzzi originally placed a rubber gasket between the tail light and the tail light bracket (MG# 12741725 or CEV part number 10447). The purpose of the gasket was to provide vibration protection for the tail light bulb.
Steven Vadjinia has reproduced this gasket using thick, high quality EDPM material. Steven sells this pieces on eBay as part of a rubber restoration kit. His eBay user name is roadfuel.
Here is a pattern I made for the rubber gasket that goes between the tail light and the tail light bracket. I used an old gasket (believed to be original) as my pattern. 1⁄8 inch thick rubber material works great. An old chunk of inner tube will do, though I prefer thicker material. This corresponds to MG# 12741725 or CEV part number 10447.