diggla

My friend for christmas got me one, I went to the local auto store and purchased a 4 pin hookup since the skull is a 4 pin connector to connect to trailer harness (i have a 7 pin setup and did not want to use a conversion) I hardwired the new harness by using quik connects. Connected the white to a ground, brown to brown, yellow to yellow and green to green. The skull only lights up when i jump the yellow to green or brown? IF i dont jump them then it doesnt light up? In the diagram it says that yellow/brown is brake and left turn yellow and green is break and right turn. I have juice to the harness i installed and the yellow connecter lights up when depressing the break and when i put on the left turn signal. What am I missing?