99 alero electrical issue

[sprocket]

I have a 99 3.4L alero. Over the weekend I had hooked up an amp in the back. Ran the positive inside the car to the back like I should have. I also drilled a hole in the flap the same area the monsoon amp is clipped on to, but below it, for the ground wire, and bolted it there. Everything seemed fine, nothing blew up but my blinkers are all wonked out. when i turn my right signal on, it blinks fast but the left is fine. when i turn my hazard lights on, the right side blinkers blink at the same time where as the left side, one will blink then switch to the other. to be honest, I never paid attention to which way it should be blinking. Could anyone offer some advice as to what could be causing this? It can't be a burned out bulb, as all of them are working, including headlights and brake lights.