Everything Is Goin Wrong

yeah The other day we started putting on a kombat bodykit on my TEGGY and we're also sanding it all down but i can only work on it on the weekends we got the front and back bumper on and have the side skirts left to do. but know i got a problem with the brake lights they dont work. The bulbs are new and the fuse is still good. but i dont know what else to do. And besides that i got a flat.

try plugging them in and then if thay didnt work make sure al the wires are still in good shape. and if you are still stumped take it to a shop