My wife got into our car this morning and it noted both a LH & RH Front turn signal failure. Both worked fine yesterday. I check the fuses and they look good. On the shop manual wiring diagram they seem to be fully separate circuits. Can anyone give provide any advice on what to check. I cannot believe that both light-bulbs would go out together. Recommendations?

 

It is a bit obvious, but I would still check the bulbs first.

Mellow

 

Check the bulb holder contacts for burning while you are in there.