not really triumph related, more of a general bike question.... This has happened to me twice, first in my zrx1200 and yesterday on my speed triple. I replaced non led indicators with non led indicators and they blink much quicker than the old ones did. I know this happens when you put led lights on without the thingys (getting of, can't remember the name) but these are def non leds. Why?
It is to do with the amount of draw on the system I assume that the new bulbs are more efficient and draw less so the system blinks faster.
Check the wattage of the bulbs lower wattage bulbs will cause this issue, you may need to replace the bulbs with the originals or others of the correct wattage ( 12v 21w or whatever is fitted as standard ). If you want to keep them as they are you may need to add resistors like the ones @Sprinter has in his video clip. If you go this route make sure they are mounted securely to clean dry metal to help with heat dissipation.