Both headlights not working

[Noboarders]

Hi all, I have a 1999 boxster and both headlights went out on me.

I had a dealer installed a unit to turn on day time running lights a few years ago because I had to import the car to Canada.

Could this be the cause I have no lights?
I tried replacing fuses, maybe I didnt get replce the right one?
Can both headlights go out at the same time cause by fuse?


High beams - ok
Fog lights - ok
Turn signal - ok

Any thoughts and suggestions would be greatly appreciated.
Thanks

ps
in the mean time, I switched the the sockets around high beams to low beams. I have driving lights at night when I turn on my high beams. Hope this is ok