The hardest part was finding a path and routing the two sending unit wires to and within the engine compartment. If your uncomfortable with any part of this guide, don't do it. I assume you safely know how to elevate your vehicle and are aware of the power contained in the cars battery. I assume you know what a torque wrench is. Do not wear any jewelry, belt buckles and jeans with rivets.
Moccasins are a nice replacement for shoes.
BMP recommends using silicone to mount the gauges. I found this to be unacceptable. Also, paint was flaking off two of the gauges. They sent a UPS call tag for the entire package and replaced it with three U-bracket mounted gauges with paint intact. Although you don't really need the electrical manual, it is nice to have if you want to do it your way.