Includes both tail lights, right hand 6 function and left hand 7 function. All hardware is included. Shockproof socket for bulb protection against vibration, easiest lights to install guaranteed. Quick connect socket only requires a stripped wire, insert in clearly marked hole for each socket (see detailed picture) and grounds through the mounting hardware. Complete wire harness sold separately, these lights do not require any special wire harness for installation. Just simply strip the end of the wire from your trailer and insert into the quick connect socket as seen in pictures. Also has a release if you need to change the wiring later, just press the release below each connection socket to release the wire without damaging the light or wire? With 100% replaceable bulbs and lenses you are not required to buy a completely new light if you have a bulb burn out or a lens crack. Finally a quality light on the market to replace 440 style lights that are easy to install and wire, that are strong, reliable and most importantly affordable! This is a pair of lights for your trailer, one left and one right hand light included. Manufacturer cross reference light will work as an exact replacement for: UNI bond # tl4400 Wes bar # 3060 Grote # 52302 Peterson # 440 Jammy # 2024 optronics , ST8RB.