doors will not unlock?

I have a 2007 Toyota Yaris and I recently purchased this key less entry from ebay. I installed everything and got mostly everything working. However I connected the Yellow wires from the key less to the proper lock and unlock wires and it will not work. The unit itself makes the clicking noises and everything, but I get nothing! I'm not to good with this stuff at all and don't know if a diode is needed?, I know I have the proper wires from the car because when I touch the wire from the car to the ground it locks and when I do the same with the other wire it unlocks. The instructions from the seller are not the best this is basically it right here. The only thing I don't get it what open and close signal mean. The car has negative locks and I'm using the F2 wiring chart https://img205.imageshack.us/my.php?image=1002718pr2.jpg ^Click for image

yellow and yellow/black should be grounded, and white and WHITE/ black should be connected to the lock and unlock wires in the car.

JWorm wrote: yellow and yellow/black should be grounded, and white and WHITE/ black should be connected to the lock and unlock wires in the car.

I will try this!