Just did this Mod tonight. Took about 4 hours but 2 of that was finding the fuse that blew. If you aren't getting any cabin lights that would be on if the doors are open and your nav, sterio, and heat controls dont work
check the 20A backup fuse under the hood.
I switched the pins inside the clip instead of cutting the wires (more difficult in poor lighting)
Also I skipped the diodes becasue I like as much light as possible and don't care if all the lights turn on with one switch. I wound up soldering the wires directly to the switch leads.
Thanks for posting instructions. I know I'll enjoy this one a lot!