Does anybody know if a 2018 breakout with the 114 have a fuse box ? Looked online but couldn’t find anything for the m8 only previous models.

 

That information is in the manual. If you don't have one you can get a free one on the HD website. Go to the homepage and click on "owners". You should be able to find it from there. Anyway, it's behind the cover on the left side under the seat. There aren't many fuses anymore. Most of the circuits are protected by the BCM.