I just installed some yellow bulbs for my drls but they stopped working the high beams come on fine but the drls do not..

 

this may not be the issue, but some bulbs have dual filaments that allow 2 levels of light output, ie - headlight and high beams, but in our case, DRL and high beams. make sure the bulb you have is capable of this.

 

I just came off the highway and noticed my drls were working. They probeley had to take awhile to recognize the bulbs.