2014 reg cab backup camera install, 1 wire on harness

whats cooking, new guy here just picked up a 14 taco reg cab auto, wanted one for awhile pulled trigger on one. From my research it seems it is possible to add camera to my lock and pop tailgate handle, but based on checking my harness it appears I only have 1 wire feeding into the plug not 4, so... can anyone send me a link of what is needed to splice in or run longer harness to attach backup camera to my display? From what I understand the 14 is different from 13 etc...

sidenote its a 14 reg cab black, ordered mk6 -10 offset in gunmetal with 265 75 falken wildpeak at3s that should be here monday, pics to follow. I use to drive a lcog tj on 35 mtrs, I still have my rock 9.5 superwinch ill be stuffing on a hidden winch mount soon enough too. thanks for the help -tom

 

I did this... http://www.rostra.com/2014-toyota-tacoma-tailgate-backup-camera.php
Spend the time looking at the instructions etc... go through Amazon for your order (cheaper than direct somehow). Really easy install! Works great!