Park/ turn light

If the housings are attached to plastic the MIGHT need to have a dedicated ground.

Now the pigtail has 2 wires. If the bulb is a single filament bulb (not like a brake / tail light dual filament bulb)

Then one of the wires is most likely the ground.


You can prove this out with a multimeter check each terminal to ground one should be as close to a dead short as your meter will display and the other should have a few ohms if the bulb is installed. And be open if the bulb is not installed.