rear dome light rear seat audio wiring

[eric4runner]

heres my problem when i bought my 4runner it had a dvd flip down player instead of the dome light i took it out and now the ribbon wire that went to the power to the dome light i have no idea which one is power ground and on with door open i was hoping someone may have taken there apart and could see what order they go in. Also does anyone know where i could get the plug to connect back to ribbon wire below are pictures of the dome light with rear seat audio

 

[grillete]

wiring

From factory, it has a jack with 3 wires, Door open, Ground, and 12v. I don't remember very well but the 3 wires looks the same (grey+blue) you must use a voltimeter or a simple tester to try, just remember the center one is ground, you can use the outside part of the lighter to try with the tester.