I search and found nothing but maybe I search the wrong words or something. Because I remember reading about it before on here. I took mine off last night to replace the bulb in it and noticed it does have 3 spots. but my ? is would I need to rewire it. Or wasnt it like a Sport Trac something or other for one that has 3 bulbs in it already?
If someone could direct me to the thread I'd be way easier than reposting everything.

 

Do you want 3 brake lights or do you have the white ends for cargo lights? My '03 has the 3 spots but only one with a bulb in it and all red lens.

 

its an all red lens was just thinkn of puttn 3 in there maybe 2 diff colored on the sides that I'd run power too a manual switch. but I seen the harness thats with it and that made me want to research more.

 

I was wondering the same thing. But i think im goin to get the one with cargo light and wire mine up like that.