ok so i bought a pair of LED Grille lights a while back thinking "any dummy can put these on" but i guess im no ordinary dummy. The mounting is easy enough but all the directions say for hooking them up to a elctircal sourse is connect the black wire to the chassis ground. connect the the red to a switched 12V sourse, such as the parking lights. Not every detailed for someone who does not know much but my main question is what is the chassis ground and how do i do that??
thanks