Rear light out? 1150GSA

[The_Pilot]

my rear lights out, bulb seems ok, no warning lights!!!

Changed the bulb, nothing? Wiring and connections seem ok.

Brake light is fine.

Before I take it to the dealer (It is in warranty) anyone got an idea as to what to check next?

All help appreciated.

 

[ELIMINATOR]

Your bike is? Ok I looked....................... 2004 1150 GSA, servo or non servo?