I made my parking lights also turn signals. I did not use leds but nothing very magical about leds. The first thing to know is you need a different type of flasher as leds don,t draw enough current to heat the bi-metalic strip in a standard flasher. You then need to know the voltage 6 or 12. Leds are sensitive to voltage. Led arrays typically have a voltage limiting device and may have current regulation as well. You will probably have to mount an L bracket under the lens to hold the led array you choose. Depending on your turn signal set up and if you still want parking lights you might need two circuits. I made a new terminal strip for the fender a 4 pole.
