You probably won't find any.
I presume you have only 2 cables going to the 3 pinned head, so here's what you can do: if you look closely to the female pin you will notice some little metallic part coming out from the plastic. Take a thin screwdriver push in the metallic part and pull out the cable. Then just push in then metallic pin in the oder pin socket. The only thing is to check out carefully which is the + and the - so you won't mess up anything. They are always marked.