Product Features: Package: 10x Amber Oval 2.5" Side Marker/Clearance Lights Auto Side Lamps, For Trailer Truck Pickups. Size: 2.5" x 1.1" x 0.7"(65.8*27.9*17.6mm) and Hole to Hole Distance: 1.8"(46mm). Easy To Install: 2 Wire Connection: Red/Yellow is Negative and Black is Positive. Application: Universal to most car trucks, trailers, horse trailers, travel trailers, boat trailers, RV, camper Pickups, trucks, SUV. Widely used: Can be used on any applications, left-right front-rear roof side; Can function as Side Marker Lights, Identification Lamps, Trailer Lights, etc. .