my 04 Z85 didnt come with fog lights. i want fog lights. what are the dimensions of the lights in these trucks? they look like 4x6. anyone who has added fogs to their truck please chime in, but im assuming you just need to cut out the plastic in the bumper where the fogs go. mount the fogs, & run wires to a switch mounted in the cab? or could i splice the wires & tie them into the running lights & head lights?