I was installing led turn signal bulbs into the headlights of my 10 v6, and I think I wired the resistors wrong. When I got them right they worked, but now the side markers on both the front and rear bumpers won't signal. They'll light when the headlights are on, but won't flash for either the hazards or signal. The main markers (the headlight markers and rear sequentials) work fine.

I didn't like the look of the led bulbs because the switchback feature made the lenses turn red. I have the incandescent stocks back in there now, so there's no longer a load issue, but that didn't fix it. I doubt it's a fuse, but I've been wrong before. Ideas?

 

I'm not familiar with the '10, but are you sure the side markers are supposed to flash?

 

I'm with Art. The side markers on the 05-09 don't flash and the 10 is simply a gussied-up 05-09.

 

They did before. The rear ones maybe not but the front ones did.