have a 2008 silverado, put DDM switch backs in because i cleared the lights, i added 30 watt resistors to stop them from hyperflashing, helped for a week then it started doing it again, accept now my break lights / rear turn signals weren't working accept for the lower left one. Obviously i cant drive around like that so today i yanked out the resistors and the switchbacks and put back in my stock ambers and the problem persists.. wtf? i checked the rear signal light fuses in my dash and they are fine. where else could the problem be? did i do damage to my electrical system?