I bought an aftermarket trailed hitch plug that lights up. It works fine with I use my brakes, but when I use my right turn signal it blinks along with the turn signal light. When I use my left turn signal, but trailer hitch plug stays unlit as it should be. Any idea of what wires I need to look for to make it not blink? Or maybe it is supposed to blink when I use my left signal? Any help is appreciated.