So my parking light went out, but my signal was still working. I checked the bulb to confirm this. Then I bought a new bulb and now my problem has switched to where my parking light works and my signal doesn't. The bulb isn't busted at all. I checked the fuse box and everything still looks good. Any ideas to why the signal light isn't working anymore?

 

The only thing that comes to my mind only because I have seen it many times, make sure the bulb is a 2 filament bulb. In my 2004 the bulb is a 3357. Make sure the bulb number ends with a 57 and not a 56.

 

Bad ground.

 

Bad light bulb socket. Loose or corroded contacts.