I am pulling my hair out trying to get the wiring harness in my Birkin connected to everything. I didn't care for the plastic rocker switches and swapped them out for Lucas toggle switches (a more classic look as well). Basically, there is no master wiring diagram. Everything is broken out by component. The color coding follows a strategy that I have yet to figure out. Additionally, there are a number of circuits that I am not using (heater, seat belt warning, etc.). Poor Tom Carlin. I must have made a hundred calls to him for clarifications. He has been wonderfully patient but I am seriously considering replacing the entire harness with one from Painless Performance. I have wallowed around for a couple of months trying to get everything to work. I need to move on. Anyone have any experience with Painless?