I am new to strobe light bars but i picked one up for really cheap. When i hook the main 12volt power amd ground it start to flash the strobes right away. None of the control wires are hooked up with it. Is that normal? Anything i should look for to see why that is happing? I dont have the serial number, sitting board at a wedding right now lol. But i do know the manufacturer date on the strobes is 86.