Tow wiring help

Hello just recently purchased 2006 Tacoma access cab (prerunner,trd off road package) . Now when I bought I assumed it was a factory tow package but was wrong. It has a four blade connection which I already converted to a seven pin and ran thru license plate light. Now to my question. The four blade was ran from my brake lights and I have a pop up with electric brakes. Can I. Buy the tow harness plug (which i did aleady) from Toyota. Put some fuses in the fuse box in the correct spots and BAM will this plug and play work. Other than wiring the electric brake back to seven pin.

Only reason I ask this is cause I read the towing bible and then found out I didn't have the towing package.

 

I'm might be better off just running new wires. Haha

 

2.7L you need to do minor splicing , v6 there is a hidden harness or such.

this might help..
http://www.etrailer.com/tv-brake-controller-install-2008-Toyota-tacoma.aspx