Here is my solution for mounting external GPS-antenna on my 1200. The antenna is Garmin GA25 mcx which have a strong magnet.
1. take the lid of the jar
2. glue the lid on the brakefluidlid.
3. pop the antenna on. Voila, your done!
1. take the lid of the jar
2. glue the lid on the brakefluidlid.
3. pop the antenna on. Voila, your done!

