The detail and photographic support for the do-it-yourselfer in the instruction manual helped us a lot. We only found a few places in the manual that had us trying to figure out what was really meant. On the whole, we give it an A-. The images in the manual show in detail how to assemble all the brass fittings that come with the kit as well as how to install the wiring loom. That's the nearly completely assembled remote oil pump on the right.