Is there anything i am missing here- i just installed my new smoked led 3rd brake light and it does not work. Checked connections where wires for leds plug into bulb socket and everything seems fine. neither brake lights or cargo lights work. Is there a fuse i need to change that is too small and has blown? I put one of these on my f150 a year ago and never had a problem. If someone has installed one of these and could give me some help that would be great.