(10) Red LED Camper Trailer Side Marker Clearance Lights / Chrome Plastic Base (10) 2-1/2" Red LED Truck Trailer RV Clearance Marker Lights / 3-1/4" Plastic Chrome Base Pack of (10) 2.5" Long Red LED Marker Clearance Lights... 3.25" Long by 1.75" Wide Chrome Plastic Base... Chrome Base Has 2 Mounting Holes Approx. 1-7/8" Apart... Easy Installation. Only One Small Hole Is Required For The Light Wires To Pass Through... Chrome Base and Light Are Secured By 2 Screws... Black Wire 12V Input, White Wire Is Ground... 12V Input. DOT Approved. Black Wire - Hot Lead...