Interior lights out!!! Help!!!

Ok i was foolish enough to try to change out the stock tape deck with a cd HU in my girlfriends 2000 corolla and now I have no instrument panel lights, shift lights and my tail lights aren't working too. I should have taken it to best buy, im such an idiot. I have a green wire, green/white wire and the brown wire left open. As far as i understand it the the green and green/white wires are to dimm the the deck lights when the interior lights in the car are dimmed so they shouldnt affect the light themselves right? I just need to know how to get my interior lights back on or my girlfriend will kill me.

STOP AND THINK is the dimmer knob working? the little round one to the bottom left of the steering colum(thats where it is on my 91 anyways) turned clockwise all the way? i'm not saying your stupid but hey after fighting a cd install that got confusing it can happen ( i know). second if you can dico the cd player and return the lights to working then your all set if not change the fuse (look in the manual or call the toyota dealership. also they will assist with any wiring questions or look it up on google for a stereo wiring diagram to figure out what color does what) anyways NEVER EVER let best buy employees near your car they don't know anything ask them about signal to noise and what then stutter some techno babble that doesn't make sense at all ( i should know i have some horror stories with best buys and various other shops from around the country) a cd player install is always doable by your self.
please post back i will help you get it fixed asap

Ok i was foolish enough to try to change out the stock tape deck with a cd HU in my girlfriends 2000 corolla and now I have no instrument panel lights, shift lights and my tail lights aren't working too. I should have taken it to best buy, im such an idiot. I have a green wire, green/white wire and the brown wire left open. As far as i understand it the the green and green/white wires are to dimm the the deck lights when the interior lights in the car are dimmed so they shouldnt affect the light themselves right? I just need to know how to get my interior lights back on or my girlfriend will kill me.

I suspect you have connected a wire to the illumination wire(park lights) in the radio harness but then I have just had a look at a wiring diag and although I dont have a 2000 My 1987 and newer diags does not have a illumination wire I would check any way I have seen many connected to the radio earth as the antenia is connected to radio chasis it connects dash lights to earth hence blows fuses ( and I have done this myself whilst rushing a job it is easy to do ) hope this is of some help