a few things i need help with

For one for some reason my seat belts are in the position all the way up and wont go back when i shut the door, either one wont. Also for some reason the same time my emergency lights wont work i can push the button and the light will come on, on the button but nothing else. And last what is the best way to put mesh behind your kit? Someone told me tacks but that aint goin to work and then someone else said maybe glue. Any Help I will like that. Thanks Anthony