I'm installing some aftermarket lights that I'd like to tie into the same ground as the other interior lights so they'll cycle on/off when the door is opened and shut. Does anyone happen to have a wiring diagram or know which wire I can tap into right offhand?

 

I haven't actually tested it yet, but I'm about 99% certain it's a black wire with a white stripe that's located under the steering wheel fuse panel area. It goes into a harness with a solid purple, solid green, and red with white stripe wire. If you pull the dome light, the main connector has a solid black (ground), red with white stripe (constant power), and black with white stripe (switched ground). The solid green and solid purple wires mentioned above are also located in the dome light on other controls.

 

Confirmed that it is that wire (black with white stripe). All hooked up and working as expected.