I did the standalone fog mod to my 99.5 a4 a few months ago (snipping some pins on the relay, and soldering a wire to connect two points). Worked like a charm after reinstalling the relay, but recently my fog light/rear fog switches have become completely non responsive.

I am wondering if its a fuse or the soldered wire possibly came loose. Before I pull the relay out to check (that thing was a pain to put back in) what fuse should I be checking to see if this is the issue.

thanks.