add interior entry lighting

im wanting to installing additional enterior entry lighting to the  lighting in my 2008 ford f150 supercrew. im wanting to add 2 14 volt underdash leds on both driver n passenger side. my question how to tap into the stock wiring properly to keep the light triggering function when opening the doors? also if possible the color of the wire(s) . what  is the best way to set up the wiring for my project?

http://www.v-leds.com/Exterior-LED/Courtesy-LED/White-LED/HID-WHITE-36-LED-DOMERVCAMPER-p4984364-1-3.html

i rechecked it says CURRENT DRAW: 180mA     ..one of the lights on each side of dash....