You remove the old burnt out bulb and replace it with a new. And no, they do not control your blinkers and taillights. See sources and related links below to lookup DRL light bulb part numbers by vehicle make, model and year.
You need to replace the DRL (Daytime running light) Module
DRL are your Daytime Running Lights
If you are in the US just disable the DRL, you will just have to replace the altinator sooner if you keep them on. If not check the wiring, I believe it has separte wiring for the DRL. * thanks but i want to keep my DRL Would changing the flasher unit work
DRL module
DRL stands for Daytime Running Lamps.
The DRL Module is located at the LH Rocker Panel left of the brake, under and just below the dash. The DRL Module and the DRL Relay are side-by-side.
DRL usually stands for Daytime Running Lights
DRL = daytime running lights
DRL cannot invert signals.
DRL - Daytime Running Lights
to the right of steering wheel columb it will say on the switch 'drl'