I think the wire information may be molded into the back of the light. If not, I know the two whites are grounds and will hook to the black wire. For the others, you can touch the white wires to the negative side of a battery or a battery charger and then cycle through the other wires to see what lights up.
The browns are taillights and the light greens are backup lights.
YeLlow is Left
GReen is Right