I've installed a P3 multi gauge n my 2016 A7 and I need a connection for the dim wire. It should be connected to a wire that gets power when the headlights are on. Tough to find something on the left side, but if anyone knows a wire color and location I can use let me know. There's a fusebox there, but not sure that's going to work, since most lines have power no matter whether lights are on or not.