Good evening I am hoping some one may be able to help me out. I have just got a pair of blue / white split ion light heads the independent ones but have no instructions with them. On the back there are 4 wires a blue one for power to the 3 blue led then a plain white one for power to the 3 white led then black for earth and a grey sync wire. Is it possible to change the flash pattern on these or is it a set pattern. Cheers steve