Led bulbs help!!!

[fastpakr]

That doesn't make any sense. Why would the multifunction switch suddenly go bad and start buzzing after replacing light bulbs? As stated above, an electronic flasher that doesn't require the load of an incandescent bulb to function is the first thing to test here.

 

[Mbrooks420]

The multifunction switch CAN buzz, but one side would fail first. Both sides failing immediately after changing bulbs isn’t sensible as stated above. It’s much more likely the relay is “clapping”.