Works well as advertised. I bought additional tees and fittings for my setup. I also removed the pressure gauge, power switch, and dump valve from the included bracket and mounted them directly to the dash of my E350. The backlight is just a two-pin bulb. Find some ground and take some positive from something like a parking light or dashboard. This isn't a rocket operation. This product makes it so easy to add/remove air pressure from your spoilers. Very handy when you are hitching or unhitching a trailer or loading your car so you need to adjust the ride. It makes enough noise to let you know it's working. It doesn't take long to add 20-40 pounds of pressure. Another good point is that this compressor only uses a 15 amp circuit. Some other compressors I've seen require 30 amps of current, which is a problem if the switch is remote from the compressor as intended. Now you don't want to lay a welding cable, do you? One of the other reviews suggests using a wire harness to cover and protect the overhead wire that goes to the cockpit sensor and switch. O spirit! I really had to. Excellent recommendation. Oh, and don't forget to keep the air duct away from the exhaust pipes. TO?