But it is raining right now so a can't really look at it (I'll check tomorrow after work). If you remove the carpet along the doors, there is a section of conduit right on top of your fuel lines. Follow them to your fuse box under the steering column and just tap into those. The wires for the door open/close switch run thru that conduit.

Keep in mind that most LEDs are rated at 5 volts max, so you will ether need to connect a resistor to the + lead of each resistor with their own separate loops, or make on separate loop that taps into your dome line with the proper resistor to step it down to 5 volts (or whatever your LEDs are rated for).