LED 3rd brake light
Looking into getting a smoked LED 3rd brake light for my car. I've read about having to reverse the polarity on some cars for it to work. Is there any way of knowing beforehand (perhaps based on model year, or options on the car) whether it's plug and play or if it requires a swap of the wires? Also, I read something about the cruise control potentially not working if you install one of these?
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