what do i need for filling in my rear garnish i have the paint that matches the paint code and i have 400 grit sandpaper. i just need the steps to do it i have a lot of free time friday n i have a other project to do to..

i dont know how to do this wiring on my leds i try adding a criut to it but i get notthing i also added some cathdoes to my car i remeber very little of it i added to switcs to it and it works but i was thinking of having one of the wire going thou one of those switch to add a + to the switch and have the trasmetter wire to the switch as well so i will have a complete conncetion.
i was also thinking of just connceting it to the battery if thats better because there is a on and off buttom. the leds and ANDLEDS 100 streetglow.