I know how to get the mirror off the bike. Just trying to get the LED circuit board out from the inside of the mirror. If you go by the service manual it says it can't be done.
"The front turn signals (1) are built into the rear-view mirrors (Sect. E 1, Removal of the rear-view
mirrors) and in the event of malfunction, the mirror/turn signal assembly must be renewed as a
complete unit."