The manual on/off switch is nice, because you will never drain your battery when the hood is down. You can also see the hand crank to retract the light. Oh, if you do find one in a junkyard, do yourself a favor and take the connector and some of the GM wiring too. While I’ve seen different color wires, the black in factory GM wiring is always ground. I then solder the GM wires to the Jeep wires, and of course, I heat shrink them too. I also normally only use two of the three tabs to mount the light to the Jeep, which leaves the third free to zip-tie any extra wire to for a clean installation.