Got mine in this week and completed the install myself. Fairly simple; took about 3.5 hours from start to finish. The only real problem that came up during the install was the wire colors for both rear door trigger wires.
The driver side rear door wire is dark grey from the AMP harness, but in the wiring loom of the truck, there are (2) dark grey wires. You have to open the rear door switch to see the true color that is connected to it, then locate it in the loom, then to determine which one is the correct one, use a multi-meter and look for the 11.84 ~ 12 VDC read out when the rear door is open and check it when closed at 0.0 VDC and that'll be your wire. Same with the passenger side rear door. There are (2) green wires as well. Not sure if it's only like this for the 07's though.
Don't forget to relocate the E-brake bracket located in front of the rear wheel well as per the instructions (which isn't clear on the location). You'll have to bend the lock tab flat to the frame. Hope this helps.
Linkage uses factory running board holes.
Installation of Controller module
Trigger wire connections passenger side
Power Steps fully retracted
Power Steps fully extended
E-Brake bracket shown with tab flattened and reinstalled with cable above thread hole
These things are awesome! They hide very well and are light wieght yet durable. $1200~ was my cost.