[Accelo]

My advice is to be very careful about keeping the various packaging together. Finish one section as best you can and then move on. Individually package them and then keep them all in a box with the wiring directions on top. You will need them often. The LSX wiring didn't require much interfacing with the AAW. The 4L80 will interface with the computer. Only output required from the transmission is the speed sensor. The AAW comes with the wiring for aftermarket gauges and a twisted pair wiring for the speed sensor. I used a power probe to test every circuit I could. It has the ability to provide power and a ground at the tip. Of course, a length of wire to the battery would work. If you make one fuse it at the battery. FYI, the Power Probe has a circuit breaker in the handle. Don't be afraid of calling the Tech Support Line at AAW. They are helpful and easy enough to contact. I recommend starting at the rear tail lights. You will get some experience with the crimping process that way. AAW is fairly generous with extra wiring ends so you can make some mistakes.
I really liked the Mega Fuse that is included in the kit. Gave me options for power accessories without tapping the battery cable. If you, do it at the battery it looks like a back yard add on and if you use the starter end for the wiring is long and difficult to get to and exhaust tends to cook the wiring. I recommend some shrink tubing and the plastic sleeves to clean things up. Actually, wiring is straightforward enough. Making it look good is the difficult part. Planning ahead where your computer(s) will mount is paramount to getting a clean system install.
One more thing I thought of. There are at least three types of spade connectors. Two are different widths, very close to each other and easy to mix up. Headlights take the wider of the two. There are a;sp two different crimps ends on the connectors. One is wider for crimping two wires into the same terminal. They have pictures but didn't really explain the different usage very well.
Cheers