Well i took my personal project and added 2 red LED lights. It took me a while because i had to flip my LED's and then i broke both. So i got 2 new LED's and hooked rewired it, once i was finished 1 LED didnt light up...... So i had to go back and check what was wrong and i guess not enough power was going through to the other LED. So i re wired it all over again! Once that was done it was all finished :) i broke 2 needles from trying to get them through wood.