my turn signals blinking fast!!!

I recently change my bumper signal lights enclosure to jdm after I tested it it was ok but then suddenly after I tried it again it started to blink fast…
I haven’t look(went to work) but I think the bulb blew… I dunno know… pls help…

either it blew or is not on tight… that is why it is blinking fast…

thanks

ok… I ll see tonight after I get home from work… thanks…

Or they are unplugged at the connection.