I installed a pair of these on my Jeep Wrangler the other day. They are extremely bright and come complete with an excellently-built wiring harness complete with inline fuse and switch. The lights themselves are very heavy duty, and I expect they will take a pretty good beating. Hopefully they will be as waterproof and shock resistant as the reviews say. The only issue I have is that the wiring harness uses aluminum instead of copper wires. Aluminum is cheaper, but copper is a better conductor.

The lights are expensive but you get what you pay for. They are extremely bright and appear to be quality built. I've only had them on for a few days, but man are they nice. They come in a box with includes a wiring kit and switch. The directions are crap, but they are pretty easy to install as the wiring kit is already set up. One issue I had was hooking the switch up. The ground (black) goes to the gold looking connector, the blue wire (power) goes to the middle connector, and the red (positive) goes to the far connector (not gold looking). If that makes me seem like a moron, you're probably right, but I hope it helps.