[Scott>72-GMC]

Ya it's for other vehicles to tell what's coming imagine being on a narrow two lane road and its dark as all can be and u see two headlights coming at u u switch to ur dims think everything is fine then a big old big rig bout blows u off the road cause it didn't have these marker lights to give u a hint what was coming lol same purpose. U can get aftermarket cab lights that fit the ( non cab light) trucks they don't look the same but add the cool factor non the less at night
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