Roof lighting question?

[RioDeColumbia]

So I saw this guy who added 2 more lights up tool along with the factory off road lights, and I want to do it now. So I am planning on using 2 4" KC daylighters. However, I was wondering if you could tap the wiring going to the current roof light and power the KCs also. Or would I have to run separate wire to the new lights?

Here is the link to the lights I want to use:
http://www.amazon.com/KC-HiLiTES-490-Driving-System/dp/B008KX06RQ


And here is the thread I found on a guy doing this project:

http://www.thenewx.org/forum/showthread.php?t=52909#/forumsite/21065/topics/52909?page=2

 

[granitex]

You need to run another power and ground to the other lights. The original wiring and relays were not designed for that kind of load.

 

[RioDeColumbia]

Alright, thanks