Fog Lights suddenly stopped working

As the title suggest my fog lights just seized working from one minute to the next. I just bought my 04 Ram and it seems the fog lights did not come stock because it is not in my switch. There is a separate switch. I highly doubt that both bulbs when out at the same time. I have not checked fuses or anything because they were not stock. If anyone has any info please share.
Were do i start checking for problems?

at the fuses. if it's not the bulbs, the next place to check is the fuses. since they're not stock, there's a fair likliness that it could be a blown fuse. if the lights draw more current than the fuse is rated for, the fuse will blow. if it's blown, replace it like-for-like. if it keeps blowing, get the next fuse up for it.

i would agree most likly a blown fuse, most aftermarket fog lights come with harnesses and usally the fuse is fairly close to the battery. I would start there if you do not see anything, try to trace from the fog lights back probably a relay in there some where with a wire going to power fuse is most likly on that wire.