1989 V6 Running Lights

:banghead: I have a 1989 1/2 ton short bed with a V6 engine. My brake, tail and headlights are all working but for some reasonall at once my running lights went out. All the bulbs are new and I have checked the fuse under the dash and it's good. Any ideas where I may start to look for this problem at?? Appreciate any help guys.

might be the day time running light relay if its not the fuse