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.
Check for a bad ground
I have a 1983 GMC Sierra it has no dash,tail lights an brake lights are very dim
To replace turn signal control module requires removing steering wheel. Took mine to a dealer - $245 out the door. Brake lights work great now.
have you check the tail light fuse to see if it is blown. other possiblly is the headlight switch.
Man vehicles have the dash lights and tail lights wired through the same fuse. Check your fuse box for the dash or tail light fuse. Something has most likely caused it to blow.
Dead battery or dirty/corroded terminals
Drop the tailgate, access the screws to remove the taillight assembly. Remove the screws holding the circuit board to the assembly, pull the board and you will have access to the bulbs.
My rear window brake light works, but not my tail light brakes on my 1997 Monte Carlo. What is the problem?
It controls the headlights, dash lights, tail lights and park lights. You don't repair it you replace it.
In order to find out how to replace broken tail lights on a car, one can go to the WikiHow website. The website has a seven step tutorial on how to fix tail lights complete with pictures.
replace fuse
When your tail lights are out you can simply replace them. If they continue to blow, you may have an electrical problem.