The sill install was equally straight forward. Be prepared to dig out broken mounting pegs form the original sills!Hey Jaggy, the install went very well and everything is working as described. Your instructions are spot on. Even the USB plug mod was simple enough! The entire process with 3 friends took about 3 1/2 hrs. The only part that didn't work as well for me was the carpet cutout for the UAD interface. Even with removing the carpet padding, there was still not enough under-seat clearance. We simply removed the cut out carpet piece which gave us just enough clearance. As stated in your instructions, I did have to reset my auto up windows. BTW, the torx/star driver for the seat bolts is a size E12. Simply attached it to a 3/8" ratchet wrench. It was a challange at times to find the release tabs for the electrical connections to the Harmon unit. Now I'm awaiting the lighted sill plates and wireless phone charger from China! Thanks again for all your assistance!