Rear Break Light Sw thread count

[Cooter]

Its M10-1.25

http://www.erikbuellracing.net/store/y0374-1b7-brake-light-switch-banjo-bolt-m10-1-25.html

https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=14912&cid=0&s=brake light switch&a=

$28 from LAP through Ebay:
https://www.ebay.com/itm/EBR-Buell-...O-BOLT-M10-1-25-Y0374-1B7-Rev-A-/202173850017

FWIW most Brembo masters use the weird M10-1.0 thread if you want to upgrade and EBR sells that one too. Might be the cause of your confusion.

 

[TheWood]

A belated thank you to you two gents above ^^^, and Happy New Year. (Gotta be better than 2020, right?)